media: Add a web preference to enable encrypted media

chrome/common/pref_names.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_font_webkit_names.h"
@@ skipping 353 matching lines @@
     "webkit.webprefs.default_fixed_font_size";
 const char kWebKitMinimumFontSize[] = "webkit.webprefs.minimum_font_size";
 const char kWebKitMinimumLogicalFontSize[] =
     "webkit.webprefs.minimum_logical_font_size";
 const char kWebKitJavascriptEnabled[] = "webkit.webprefs.javascript_enabled";
 const char kWebKitJavascriptCanOpenWindowsAutomatically[] =
     "webkit.webprefs.javascript_can_open_windows_automatically";
 const char kWebKitLoadsImagesAutomatically[] =
     "webkit.webprefs.loads_images_automatically";
 const char kWebKitPluginsEnabled[] = "webkit.webprefs.plugins_enabled";
+const char kWebKitEncryptedMediaEnabled[] =
+    "webkit.webprefs.encrypted_media_enabled";
 
 // Boolean that is true when Data Saver is enabled.
 // TODO(bengr): Migrate the preference string to "data_saver.enabled"
 // (crbug.com/564207).
 const char kDataSaverEnabled[] = "spdy_proxy.enabled";
 
 // Boolean that is true when SafeBrowsing is enabled.
 const char kSafeBrowsingEnabled[] = "safebrowsing.enabled";
 
 // Boolean that is true when the SafeBrowsing interstitial should not allow
@@ skipping 2002 matching lines @@
 // default search engine, if it is the Google search engine.
 const char kGoogleDSEGeolocationSetting[] = "google_dse_geolocation_setting";
 
 // A dictionary of manifest URLs of Web Share Targets to a dictionary containing
 // attributes of its share_target field found in its manifest. Each key in the
 // dictionary is the name of the attribute, and the value is the corresponding
 // value.
 const char kWebShareVisitedTargets[] = "profile.web_share.visited_targets";
 
 }  // namespace prefs