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      1 /*
      2  * Copyright (C) 2012 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "src/inspector/injected-script.h"
     32 
     33 #include "src/inspector/injected-script-native.h"
     34 #include "src/inspector/injected-script-source.h"
     35 #include "src/inspector/inspected-context.h"
     36 #include "src/inspector/protocol/Protocol.h"
     37 #include "src/inspector/remote-object-id.h"
     38 #include "src/inspector/string-util.h"
     39 #include "src/inspector/v8-console.h"
     40 #include "src/inspector/v8-function-call.h"
     41 #include "src/inspector/v8-injected-script-host.h"
     42 #include "src/inspector/v8-inspector-impl.h"
     43 #include "src/inspector/v8-inspector-session-impl.h"
     44 #include "src/inspector/v8-stack-trace-impl.h"
     45 #include "src/inspector/v8-value-copier.h"
     46 
     47 #include "include/v8-inspector.h"
     48 
     49 namespace v8_inspector {
     50 
     51 using protocol::Array;
     52 using protocol::Runtime::PropertyDescriptor;
     53 using protocol::Runtime::InternalPropertyDescriptor;
     54 using protocol::Runtime::RemoteObject;
     55 using protocol::Maybe;
     56 
     57 std::unique_ptr<InjectedScript> InjectedScript::create(
     58     InspectedContext* inspectedContext) {
     59   v8::Isolate* isolate = inspectedContext->isolate();
     60   v8::HandleScope handles(isolate);
     61   v8::Local<v8::Context> context = inspectedContext->context();
     62   v8::Context::Scope scope(context);
     63 
     64   std::unique_ptr<InjectedScriptNative> injectedScriptNative(
     65       new InjectedScriptNative(isolate));
     66   v8::Local<v8::Object> scriptHostWrapper =
     67       V8InjectedScriptHost::create(context, inspectedContext->inspector());
     68   injectedScriptNative->setOnInjectedScriptHost(scriptHostWrapper);
     69 
     70   // Inject javascript into the context. The compiled script is supposed to
     71   // evaluate into
     72   // a single anonymous function(it's anonymous to avoid cluttering the global
     73   // object with
     74   // inspector's stuff) the function is called a few lines below with
     75   // InjectedScriptHost wrapper,
     76   // injected script id and explicit reference to the inspected global object.
     77   // The function is expected
     78   // to create and configure InjectedScript instance that is going to be used by
     79   // the inspector.
     80   String16 injectedScriptSource(
     81       reinterpret_cast<const char*>(InjectedScriptSource_js),
     82       sizeof(InjectedScriptSource_js));
     83   v8::Local<v8::Value> value;
     84   if (!inspectedContext->inspector()
     85            ->compileAndRunInternalScript(
     86                context, toV8String(isolate, injectedScriptSource))
     87            .ToLocal(&value))
     88     return nullptr;
     89   DCHECK(value->IsFunction());
     90   v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(value);
     91   v8::Local<v8::Object> windowGlobal = context->Global();
     92   v8::Local<v8::Value> info[] = {
     93       scriptHostWrapper, windowGlobal,
     94       v8::Number::New(isolate, inspectedContext->contextId())};
     95   v8::MicrotasksScope microtasksScope(isolate,
     96                                       v8::MicrotasksScope::kDoNotRunMicrotasks);
     97 
     98   int contextGroupId = inspectedContext->contextGroupId();
     99   int contextId = inspectedContext->contextId();
    100   V8InspectorImpl* inspector = inspectedContext->inspector();
    101   v8::Local<v8::Value> injectedScriptValue;
    102   if (!function->Call(context, windowGlobal, arraysize(info), info)
    103            .ToLocal(&injectedScriptValue))
    104     return nullptr;
    105   if (inspector->getContext(contextGroupId, contextId) != inspectedContext)
    106     return nullptr;
    107   if (!injectedScriptValue->IsObject()) return nullptr;
    108   return std::unique_ptr<InjectedScript>(
    109       new InjectedScript(inspectedContext, injectedScriptValue.As<v8::Object>(),
    110                          std::move(injectedScriptNative)));
    111 }
    112 
    113 InjectedScript::InjectedScript(
    114     InspectedContext* context, v8::Local<v8::Object> object,
    115     std::unique_ptr<InjectedScriptNative> injectedScriptNative)
    116     : m_context(context),
    117       m_value(context->isolate(), object),
    118       m_native(std::move(injectedScriptNative)) {}
    119 
    120 InjectedScript::~InjectedScript() {}
    121 
    122 Response InjectedScript::getProperties(
    123     v8::Local<v8::Object> object, const String16& groupName, bool ownProperties,
    124     bool accessorPropertiesOnly, bool generatePreview,
    125     std::unique_ptr<Array<PropertyDescriptor>>* properties,
    126     Maybe<protocol::Runtime::ExceptionDetails>* exceptionDetails) {
    127   v8::HandleScope handles(m_context->isolate());
    128   v8::Local<v8::Context> context = m_context->context();
    129   V8FunctionCall function(m_context->inspector(), m_context->context(),
    130                           v8Value(), "getProperties");
    131   function.appendArgument(object);
    132   function.appendArgument(groupName);
    133   function.appendArgument(ownProperties);
    134   function.appendArgument(accessorPropertiesOnly);
    135   function.appendArgument(generatePreview);
    136 
    137   v8::TryCatch tryCatch(m_context->isolate());
    138   v8::Local<v8::Value> resultValue = function.callWithoutExceptionHandling();
    139   if (tryCatch.HasCaught()) {
    140     Response response = createExceptionDetails(
    141         tryCatch, groupName, generatePreview, exceptionDetails);
    142     if (!response.isSuccess()) return response;
    143     // FIXME: make properties optional
    144     *properties = Array<PropertyDescriptor>::create();
    145     return Response::OK();
    146   }
    147   if (resultValue.IsEmpty()) return Response::InternalError();
    148   std::unique_ptr<protocol::Value> protocolValue;
    149   Response response = toProtocolValue(context, resultValue, &protocolValue);
    150   if (!response.isSuccess()) return response;
    151   protocol::ErrorSupport errors;
    152   std::unique_ptr<Array<PropertyDescriptor>> result =
    153       Array<PropertyDescriptor>::fromValue(protocolValue.get(), &errors);
    154   if (errors.hasErrors()) return Response::Error(errors.errors());
    155   *properties = std::move(result);
    156   return Response::OK();
    157 }
    158 
    159 void InjectedScript::releaseObject(const String16& objectId) {
    160   std::unique_ptr<protocol::Value> parsedObjectId =
    161       protocol::StringUtil::parseJSON(objectId);
    162   if (!parsedObjectId) return;
    163   protocol::DictionaryValue* object =
    164       protocol::DictionaryValue::cast(parsedObjectId.get());
    165   if (!object) return;
    166   int boundId = 0;
    167   if (!object->getInteger("id", &boundId)) return;
    168   m_native->unbind(boundId);
    169 }
    170 
    171 Response InjectedScript::wrapObject(
    172     v8::Local<v8::Value> value, const String16& groupName, bool forceValueType,
    173     bool generatePreview,
    174     std::unique_ptr<protocol::Runtime::RemoteObject>* result) const {
    175   v8::HandleScope handles(m_context->isolate());
    176   v8::Local<v8::Value> wrappedObject;
    177   v8::Local<v8::Context> context = m_context->context();
    178   Response response = wrapValue(value, groupName, forceValueType,
    179                                 generatePreview, &wrappedObject);
    180   if (!response.isSuccess()) return response;
    181   protocol::ErrorSupport errors;
    182   std::unique_ptr<protocol::Value> protocolValue;
    183   response = toProtocolValue(context, wrappedObject, &protocolValue);
    184   if (!response.isSuccess()) return response;
    185 
    186   *result =
    187       protocol::Runtime::RemoteObject::fromValue(protocolValue.get(), &errors);
    188   if (!result->get()) return Response::Error(errors.errors());
    189   return Response::OK();
    190 }
    191 
    192 Response InjectedScript::wrapObjectProperty(v8::Local<v8::Object> object,
    193                                             v8::Local<v8::Name> key,
    194                                             const String16& groupName,
    195                                             bool forceValueType,
    196                                             bool generatePreview) const {
    197   v8::Local<v8::Value> property;
    198   v8::Local<v8::Context> context = m_context->context();
    199   if (!object->Get(context, key).ToLocal(&property))
    200     return Response::InternalError();
    201   v8::Local<v8::Value> wrappedProperty;
    202   Response response = wrapValue(property, groupName, forceValueType,
    203                                 generatePreview, &wrappedProperty);
    204   if (!response.isSuccess()) return response;
    205   v8::Maybe<bool> success =
    206       createDataProperty(context, object, key, wrappedProperty);
    207   if (success.IsNothing() || !success.FromJust())
    208     return Response::InternalError();
    209   return Response::OK();
    210 }
    211 
    212 Response InjectedScript::wrapPropertyInArray(v8::Local<v8::Array> array,
    213                                              v8::Local<v8::String> property,
    214                                              const String16& groupName,
    215                                              bool forceValueType,
    216                                              bool generatePreview) const {
    217   V8FunctionCall function(m_context->inspector(), m_context->context(),
    218                           v8Value(), "wrapPropertyInArray");
    219   function.appendArgument(array);
    220   function.appendArgument(property);
    221   function.appendArgument(groupName);
    222   function.appendArgument(forceValueType);
    223   function.appendArgument(generatePreview);
    224   bool hadException = false;
    225   function.call(hadException);
    226   return hadException ? Response::InternalError() : Response::OK();
    227 }
    228 
    229 Response InjectedScript::wrapValue(v8::Local<v8::Value> value,
    230                                    const String16& groupName,
    231                                    bool forceValueType, bool generatePreview,
    232                                    v8::Local<v8::Value>* result) const {
    233   V8FunctionCall function(m_context->inspector(), m_context->context(),
    234                           v8Value(), "wrapObject");
    235   function.appendArgument(value);
    236   function.appendArgument(groupName);
    237   function.appendArgument(forceValueType);
    238   function.appendArgument(generatePreview);
    239   bool hadException = false;
    240   *result = function.call(hadException);
    241   if (hadException || result->IsEmpty()) return Response::InternalError();
    242   return Response::OK();
    243 }
    244 
    245 std::unique_ptr<protocol::Runtime::RemoteObject> InjectedScript::wrapTable(
    246     v8::Local<v8::Value> table, v8::Local<v8::Value> columns) const {
    247   v8::HandleScope handles(m_context->isolate());
    248   v8::Local<v8::Context> context = m_context->context();
    249   V8FunctionCall function(m_context->inspector(), context, v8Value(),
    250                           "wrapTable");
    251   function.appendArgument(table);
    252   if (columns.IsEmpty())
    253     function.appendArgument(false);
    254   else
    255     function.appendArgument(columns);
    256   bool hadException = false;
    257   v8::Local<v8::Value> r = function.call(hadException);
    258   if (hadException || r.IsEmpty()) return nullptr;
    259   std::unique_ptr<protocol::Value> protocolValue;
    260   Response response = toProtocolValue(context, r, &protocolValue);
    261   if (!response.isSuccess()) return nullptr;
    262   protocol::ErrorSupport errors;
    263   return protocol::Runtime::RemoteObject::fromValue(protocolValue.get(),
    264                                                     &errors);
    265 }
    266 
    267 Response InjectedScript::findObject(const RemoteObjectId& objectId,
    268                                     v8::Local<v8::Value>* outObject) const {
    269   *outObject = m_native->objectForId(objectId.id());
    270   if (outObject->IsEmpty())
    271     return Response::Error("Could not find object with given id");
    272   return Response::OK();
    273 }
    274 
    275 String16 InjectedScript::objectGroupName(const RemoteObjectId& objectId) const {
    276   return m_native->groupName(objectId.id());
    277 }
    278 
    279 void InjectedScript::releaseObjectGroup(const String16& objectGroup) {
    280   m_native->releaseObjectGroup(objectGroup);
    281   if (objectGroup == "console") m_lastEvaluationResult.Reset();
    282 }
    283 
    284 void InjectedScript::setCustomObjectFormatterEnabled(bool enabled) {
    285   v8::HandleScope handles(m_context->isolate());
    286   V8FunctionCall function(m_context->inspector(), m_context->context(),
    287                           v8Value(), "setCustomObjectFormatterEnabled");
    288   function.appendArgument(enabled);
    289   bool hadException = false;
    290   function.call(hadException);
    291   DCHECK(!hadException);
    292 }
    293 
    294 v8::Local<v8::Value> InjectedScript::v8Value() const {
    295   return m_value.Get(m_context->isolate());
    296 }
    297 
    298 v8::Local<v8::Value> InjectedScript::lastEvaluationResult() const {
    299   if (m_lastEvaluationResult.IsEmpty())
    300     return v8::Undefined(m_context->isolate());
    301   return m_lastEvaluationResult.Get(m_context->isolate());
    302 }
    303 
    304 Response InjectedScript::resolveCallArgument(
    305     protocol::Runtime::CallArgument* callArgument,
    306     v8::Local<v8::Value>* result) {
    307   if (callArgument->hasObjectId()) {
    308     std::unique_ptr<RemoteObjectId> remoteObjectId;
    309     Response response =
    310         RemoteObjectId::parse(callArgument->getObjectId(""), &remoteObjectId);
    311     if (!response.isSuccess()) return response;
    312     if (remoteObjectId->contextId() != m_context->contextId())
    313       return Response::Error(
    314           "Argument should belong to the same JavaScript world as target "
    315           "object");
    316     return findObject(*remoteObjectId, result);
    317   }
    318   if (callArgument->hasValue() || callArgument->hasUnserializableValue()) {
    319     String16 value =
    320         callArgument->hasValue()
    321             ? callArgument->getValue(nullptr)->serialize()
    322             : "Number(\"" + callArgument->getUnserializableValue("") + "\")";
    323     if (!m_context->inspector()
    324              ->compileAndRunInternalScript(
    325                  m_context->context(), toV8String(m_context->isolate(), value))
    326              .ToLocal(result)) {
    327       return Response::Error("Couldn't parse value object in call argument");
    328     }
    329     return Response::OK();
    330   }
    331   *result = v8::Undefined(m_context->isolate());
    332   return Response::OK();
    333 }
    334 
    335 Response InjectedScript::createExceptionDetails(
    336     const v8::TryCatch& tryCatch, const String16& objectGroup,
    337     bool generatePreview, Maybe<protocol::Runtime::ExceptionDetails>* result) {
    338   if (!tryCatch.HasCaught()) return Response::InternalError();
    339   v8::Local<v8::Message> message = tryCatch.Message();
    340   v8::Local<v8::Value> exception = tryCatch.Exception();
    341   String16 messageText =
    342       message.IsEmpty() ? String16() : toProtocolString(message->Get());
    343   std::unique_ptr<protocol::Runtime::ExceptionDetails> exceptionDetails =
    344       protocol::Runtime::ExceptionDetails::create()
    345           .setExceptionId(m_context->inspector()->nextExceptionId())
    346           .setText(exception.IsEmpty() ? messageText : String16("Uncaught"))
    347           .setLineNumber(
    348               message.IsEmpty()
    349                   ? 0
    350                   : message->GetLineNumber(m_context->context()).FromMaybe(1) -
    351                         1)
    352           .setColumnNumber(
    353               message.IsEmpty()
    354                   ? 0
    355                   : message->GetStartColumn(m_context->context()).FromMaybe(0))
    356           .build();
    357   if (!message.IsEmpty()) {
    358     exceptionDetails->setScriptId(String16::fromInteger(
    359         static_cast<int>(message->GetScriptOrigin().ScriptID()->Value())));
    360     v8::Local<v8::StackTrace> stackTrace = message->GetStackTrace();
    361     if (!stackTrace.IsEmpty() && stackTrace->GetFrameCount() > 0)
    362       exceptionDetails->setStackTrace(m_context->inspector()
    363                                           ->debugger()
    364                                           ->createStackTrace(stackTrace)
    365                                           ->buildInspectorObjectImpl());
    366   }
    367   if (!exception.IsEmpty()) {
    368     std::unique_ptr<protocol::Runtime::RemoteObject> wrapped;
    369     Response response =
    370         wrapObject(exception, objectGroup, false /* forceValueType */,
    371                    generatePreview && !exception->IsNativeError(), &wrapped);
    372     if (!response.isSuccess()) return response;
    373     exceptionDetails->setException(std::move(wrapped));
    374   }
    375   *result = std::move(exceptionDetails);
    376   return Response::OK();
    377 }
    378 
    379 Response InjectedScript::wrapEvaluateResult(
    380     v8::MaybeLocal<v8::Value> maybeResultValue, const v8::TryCatch& tryCatch,
    381     const String16& objectGroup, bool returnByValue, bool generatePreview,
    382     std::unique_ptr<protocol::Runtime::RemoteObject>* result,
    383     Maybe<protocol::Runtime::ExceptionDetails>* exceptionDetails) {
    384   v8::Local<v8::Value> resultValue;
    385   if (!tryCatch.HasCaught()) {
    386     if (!maybeResultValue.ToLocal(&resultValue))
    387       return Response::InternalError();
    388     Response response = wrapObject(resultValue, objectGroup, returnByValue,
    389                                    generatePreview, result);
    390     if (!response.isSuccess()) return response;
    391     if (objectGroup == "console")
    392       m_lastEvaluationResult.Reset(m_context->isolate(), resultValue);
    393   } else {
    394     v8::Local<v8::Value> exception = tryCatch.Exception();
    395     Response response =
    396         wrapObject(exception, objectGroup, false,
    397                    generatePreview && !exception->IsNativeError(), result);
    398     if (!response.isSuccess()) return response;
    399     // We send exception in result for compatibility reasons, even though it's
    400     // accessible through exceptionDetails.exception.
    401     response = createExceptionDetails(tryCatch, objectGroup, generatePreview,
    402                                       exceptionDetails);
    403     if (!response.isSuccess()) return response;
    404   }
    405   return Response::OK();
    406 }
    407 
    408 v8::Local<v8::Object> InjectedScript::commandLineAPI() {
    409   if (m_commandLineAPI.IsEmpty())
    410     m_commandLineAPI.Reset(m_context->isolate(),
    411                            V8Console::createCommandLineAPI(m_context));
    412   return m_commandLineAPI.Get(m_context->isolate());
    413 }
    414 
    415 InjectedScript::Scope::Scope(V8InspectorImpl* inspector, int contextGroupId)
    416     : m_inspector(inspector),
    417       m_contextGroupId(contextGroupId),
    418       m_injectedScript(nullptr),
    419       m_handleScope(inspector->isolate()),
    420       m_tryCatch(inspector->isolate()),
    421       m_ignoreExceptionsAndMuteConsole(false),
    422       m_previousPauseOnExceptionsState(v8::debug::NoBreakOnException),
    423       m_userGesture(false) {}
    424 
    425 Response InjectedScript::Scope::initialize() {
    426   cleanup();
    427   // TODO(dgozman): what if we reattach to the same context group during
    428   // evaluate? Introduce a session id?
    429   V8InspectorSessionImpl* session =
    430       m_inspector->sessionForContextGroup(m_contextGroupId);
    431   if (!session) return Response::InternalError();
    432   Response response = findInjectedScript(session);
    433   if (!response.isSuccess()) return response;
    434   m_context = m_injectedScript->context()->context();
    435   m_context->Enter();
    436   return Response::OK();
    437 }
    438 
    439 void InjectedScript::Scope::installCommandLineAPI() {
    440   DCHECK(m_injectedScript && !m_context.IsEmpty() &&
    441          !m_commandLineAPIScope.get());
    442   m_commandLineAPIScope.reset(new V8Console::CommandLineAPIScope(
    443       m_context, m_injectedScript->commandLineAPI(), m_context->Global()));
    444 }
    445 
    446 void InjectedScript::Scope::ignoreExceptionsAndMuteConsole() {
    447   DCHECK(!m_ignoreExceptionsAndMuteConsole);
    448   m_ignoreExceptionsAndMuteConsole = true;
    449   m_inspector->client()->muteMetrics(m_contextGroupId);
    450   m_inspector->muteExceptions(m_contextGroupId);
    451   m_previousPauseOnExceptionsState =
    452       setPauseOnExceptionsState(v8::debug::NoBreakOnException);
    453 }
    454 
    455 v8::debug::ExceptionBreakState InjectedScript::Scope::setPauseOnExceptionsState(
    456     v8::debug::ExceptionBreakState newState) {
    457   if (!m_inspector->debugger()->enabled()) return newState;
    458   v8::debug::ExceptionBreakState presentState =
    459       m_inspector->debugger()->getPauseOnExceptionsState();
    460   if (presentState != newState)
    461     m_inspector->debugger()->setPauseOnExceptionsState(newState);
    462   return presentState;
    463 }
    464 
    465 void InjectedScript::Scope::pretendUserGesture() {
    466   DCHECK(!m_userGesture);
    467   m_userGesture = true;
    468   m_inspector->client()->beginUserGesture();
    469 }
    470 
    471 void InjectedScript::Scope::cleanup() {
    472   m_commandLineAPIScope.reset();
    473   if (!m_context.IsEmpty()) {
    474     m_context->Exit();
    475     m_context.Clear();
    476   }
    477 }
    478 
    479 InjectedScript::Scope::~Scope() {
    480   if (m_ignoreExceptionsAndMuteConsole) {
    481     setPauseOnExceptionsState(m_previousPauseOnExceptionsState);
    482     m_inspector->client()->unmuteMetrics(m_contextGroupId);
    483     m_inspector->unmuteExceptions(m_contextGroupId);
    484   }
    485   if (m_userGesture) m_inspector->client()->endUserGesture();
    486   cleanup();
    487 }
    488 
    489 InjectedScript::ContextScope::ContextScope(V8InspectorImpl* inspector,
    490                                            int contextGroupId,
    491                                            int executionContextId)
    492     : InjectedScript::Scope(inspector, contextGroupId),
    493       m_executionContextId(executionContextId) {}
    494 
    495 InjectedScript::ContextScope::~ContextScope() {}
    496 
    497 Response InjectedScript::ContextScope::findInjectedScript(
    498     V8InspectorSessionImpl* session) {
    499   return session->findInjectedScript(m_executionContextId, m_injectedScript);
    500 }
    501 
    502 InjectedScript::ObjectScope::ObjectScope(V8InspectorImpl* inspector,
    503                                          int contextGroupId,
    504                                          const String16& remoteObjectId)
    505     : InjectedScript::Scope(inspector, contextGroupId),
    506       m_remoteObjectId(remoteObjectId) {}
    507 
    508 InjectedScript::ObjectScope::~ObjectScope() {}
    509 
    510 Response InjectedScript::ObjectScope::findInjectedScript(
    511     V8InspectorSessionImpl* session) {
    512   std::unique_ptr<RemoteObjectId> remoteId;
    513   Response response = RemoteObjectId::parse(m_remoteObjectId, &remoteId);
    514   if (!response.isSuccess()) return response;
    515   InjectedScript* injectedScript = nullptr;
    516   response = session->findInjectedScript(remoteId.get(), injectedScript);
    517   if (!response.isSuccess()) return response;
    518   m_objectGroupName = injectedScript->objectGroupName(*remoteId);
    519   response = injectedScript->findObject(*remoteId, &m_object);
    520   if (!response.isSuccess()) return response;
    521   m_injectedScript = injectedScript;
    522   return Response::OK();
    523 }
    524 
    525 InjectedScript::CallFrameScope::CallFrameScope(V8InspectorImpl* inspector,
    526                                                int contextGroupId,
    527                                                const String16& remoteObjectId)
    528     : InjectedScript::Scope(inspector, contextGroupId),
    529       m_remoteCallFrameId(remoteObjectId) {}
    530 
    531 InjectedScript::CallFrameScope::~CallFrameScope() {}
    532 
    533 Response InjectedScript::CallFrameScope::findInjectedScript(
    534     V8InspectorSessionImpl* session) {
    535   std::unique_ptr<RemoteCallFrameId> remoteId;
    536   Response response = RemoteCallFrameId::parse(m_remoteCallFrameId, &remoteId);
    537   if (!response.isSuccess()) return response;
    538   m_frameOrdinal = static_cast<size_t>(remoteId->frameOrdinal());
    539   return session->findInjectedScript(remoteId.get(), m_injectedScript);
    540 }
    541 
    542 }  // namespace v8_inspector
    543