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 346 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 1987 matching lines @@
 // have been recorded.
 const char kSearchGeolocationPostDisclosureMetricsRecorded[] =
     "search_geolocation_post_disclosure_metrics_recorded";
 #endif
 
 // A dictionary which stores whether location access is enabled for the current
 // default search engine, if it is the Google search engine.
 const char kGoogleDSEGeolocationSetting[] = "google_dse_geolocation_setting";
 
 }  // namespace prefs