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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // A handful of resource-like constants related to the Content application.
      6 
      7 #ifndef CONTENT_PUBLIC_COMMON_CONTENT_CONSTANTS_H_
      8 #define CONTENT_PUBLIC_COMMON_CONTENT_CONSTANTS_H_
      9 
     10 #include <stddef.h>         // For size_t
     11 
     12 #include "base/files/file_path.h"
     13 #include "content/common/content_export.h"
     14 
     15 namespace content {
     16 
     17 // The name of the directory under BrowserContext::GetPath where the AppCache is
     18 // put.
     19 CONTENT_EXPORT extern const base::FilePath::CharType kAppCacheDirname[];
     20 // The name of the directory under BrowserContext::GetPath where Pepper plugin
     21 // data is put.
     22 CONTENT_EXPORT extern const base::FilePath::CharType kPepperDataDirname[];
     23 
     24 // The MIME type used for the browser plugin.
     25 CONTENT_EXPORT extern const char kBrowserPluginMimeType[];
     26 
     27 CONTENT_EXPORT extern const char kFlashPluginName[];
     28 CONTENT_EXPORT extern const char kFlashPluginSwfMimeType[];
     29 CONTENT_EXPORT extern const char kFlashPluginSwfExtension[];
     30 CONTENT_EXPORT extern const char kFlashPluginSwfDescription[];
     31 CONTENT_EXPORT extern const char kFlashPluginSplMimeType[];
     32 CONTENT_EXPORT extern const char kFlashPluginSplExtension[];
     33 CONTENT_EXPORT extern const char kFlashPluginSplDescription[];
     34 CONTENT_EXPORT extern const char kSilverlightPluginMimeTypePrefix[];
     35 
     36 CONTENT_EXPORT extern const size_t kMaxRendererProcessCount;
     37 
     38 // The maximum number of session history entries per tab.
     39 extern const int kMaxSessionHistoryEntries;
     40 
     41 // The maximum number of characters of the document's title that we're willing
     42 // to accept in the browser process.
     43 extern const size_t kMaxTitleChars;
     44 
     45 CONTENT_EXPORT extern const size_t kMaxURLDisplayChars;
     46 
     47 extern const char kStatsFilename[];
     48 extern const int kStatsMaxThreads;
     49 extern const int kStatsMaxCounters;
     50 
     51 // Most sequence numbers are used by a renderer when responding to a browser
     52 // request for histogram data.  This reserved number is used when a renderer
     53 // sends an unprovoked update, such as after a page has been loaded.  Using
     54 // this reserved constant avoids any chance of confusion with a response having
     55 // a browser-supplied sequence number.
     56 CONTENT_EXPORT extern const int kHistogramSynchronizerReservedSequenceNumber;
     57 
     58 // Shared constants for the flash hardware video decode field trial.
     59 CONTENT_EXPORT extern const char kFlashHwVideoDecodeFieldTrialName[];
     60 CONTENT_EXPORT extern const char kFlashHwVideoDecodeFieldTrialEnabledName[];
     61 
     62 }  // namespace content
     63 
     64 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_CONSTANTS_H_
     65