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 35 CONTENT_EXPORT extern const size_t kMaxRendererProcessCount; 36 37 // The maximum number of session history entries per tab. 38 extern const int kMaxSessionHistoryEntries; 39 40 // The maximum number of characters of the document's title that we're willing 41 // to accept in the browser process. 42 extern const size_t kMaxTitleChars; 43 44 // The maximum number of characters in the URL that we're willing to accept 45 // in the browser process. It is set low enough to avoid damage to the browser 46 // but high enough that a web site can abuse location.hash for a little storage. 47 // We have different values for "max accepted" and "max displayed" because 48 // a data: URI may be legitimately massive, but the full URI would kill all 49 // known operating systems if you dropped it into a UI control. 50 CONTENT_EXPORT extern const size_t kMaxURLChars; 51 CONTENT_EXPORT extern const size_t kMaxURLDisplayChars; 52 53 extern const char kStatsFilename[]; 54 extern const int kStatsMaxThreads; 55 extern const int kStatsMaxCounters; 56 57 // Most sequence numbers are used by a renderer when responding to a browser 58 // request for histogram data. This reserved number is used when a renderer 59 // sends an unprovoked update, such as after a page has been loaded. Using 60 // this reserved constant avoids any chance of confusion with a response having 61 // a browser-supplied sequence number. 62 CONTENT_EXPORT extern const int kHistogramSynchronizerReservedSequenceNumber; 63 64 CONTENT_EXPORT extern const char kGpuCompositingFieldTrialName[]; 65 CONTENT_EXPORT extern const char 66 kGpuCompositingFieldTrialForceCompositingEnabledName[]; 67 CONTENT_EXPORT extern const char kGpuCompositingFieldTrialThreadEnabledName[]; 68 69 // Shared constants for the low latency flash audio field trial. 70 CONTENT_EXPORT extern const char kLowLatencyFlashAudioFieldTrialName[]; 71 CONTENT_EXPORT extern const char kLowLatencyFlashAudioFieldTrialEnabledName[]; 72 73 } // namespace content 74 75 #endif // CONTENT_PUBLIC_COMMON_CONTENT_CONSTANTS_H_ 76
