media: Add a web preference to enable encrypted media

chrome/browser/chrome_content_browser_client.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/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 2500 matching lines @@
   } else if (!web_prefs->web_security_enabled &&
              command_line->HasSwitch(switches::kDisableWebSecurity) &&
              !command_line->HasSwitch(switches::kUserDataDir)) {
     LOG(ERROR) << "Web security may only be disabled if '--user-data-dir' is "
                "also specified.";
     web_prefs->web_security_enabled = true;
   }
 
   if (!prefs->GetBoolean(prefs::kWebKitPluginsEnabled))
     web_prefs->plugins_enabled = false;
+  web_prefs->encrypted_media_enabled =
+      prefs->GetBoolean(prefs::kWebKitEncryptedMediaEnabled);
   web_prefs->loads_images_automatically =
       prefs->GetBoolean(prefs::kWebKitLoadsImagesAutomatically);
 
   if (prefs->GetBoolean(prefs::kDisable3DAPIs))
     web_prefs->experimental_webgl_enabled = false;
 
   web_prefs->allow_running_insecure_content =
       prefs->GetBoolean(prefs::kWebKitAllowRunningInsecureContent);
 #if defined(OS_ANDROID)
   web_prefs->font_scale_factor =
@@ skipping 899 matching lines @@
     RedirectNonUINonIOBrowserThreadsToTaskScheduler() {
   return variations::GetVariationParamValue(
              "BrowserScheduler", "RedirectNonUINonIOBrowserThreads") == "true";
 }
 
 //static
 void ChromeContentBrowserClient::SetDefaultQuotaSettingsForTesting(
     const storage::QuotaSettings* settings) {
   g_default_quota_settings = settings;
 }