Add a policy to re-enable deprecated web platform features.

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 <set>
 #include <utility>
 #include <vector>
 
@@ skipping 233 matching lines @@
 #endif
 
 #if defined(ENABLE_SERVICE_DISCOVERY)
 #include "chrome/browser/local_discovery/storage/privet_filesystem_backend.h"
 #endif
 
 #if defined(ENABLE_WEBRTC)
 #include "chrome/browser/media/webrtc_logging_handler_host.h"
 #endif
 
+using base::FileDescriptor;
 using blink::WebWindowFeatures;
-using base::FileDescriptor;
 using content::AccessTokenStore;
 using content::BrowserChildProcessHostIterator;
 using content::BrowserThread;
 using content::BrowserURLHandler;
 using content::ChildProcessSecurityPolicy;
 using content::QuotaPermissionContext;
 using content::RenderFrameHost;
 using content::RenderViewHost;
 using content::SiteInstance;
 using content::WebContents;
@@ skipping 393 matching lines @@
 void ChromeContentBrowserClient::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(
       prefs::kDisable3DAPIs,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kEnableHyperlinkAuditing,
       true,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterListPref(
+      prefs::kEnableDeprecatedWebPlatformFeatures,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 // static
 void ChromeContentBrowserClient::SetApplicationLocale(
     const std::string& locale) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // This object is guaranteed to outlive all threads so we don't have to
   // worry about the lack of refcounting and can just post as Unretained.
   //
@@ skipping 925 matching lines @@
         command_line->AppendSwitch(extensions::switches::kExtensionProcess);
 
       PrefService* prefs = profile->GetPrefs();
       // Currently this pref is only registered if applied via a policy.
       if (prefs->HasPrefPath(prefs::kDisable3DAPIs) &&
           prefs->GetBoolean(prefs::kDisable3DAPIs)) {
         // Turn this policy into a command line switch.
         command_line->AppendSwitch(switches::kDisable3DAPIs);
       }
 
+      const base::ListValue* switches =
+          prefs->GetList(prefs::kEnableDeprecatedWebPlatformFeatures);
+      if (switches) {
+        // Enable any deprecated features that have been re-enabled by policy.
+        for (base::ListValue::const_iterator it = switches->begin();
+             it != switches->end(); ++it) {
+          std::string switch_to_enable;
+          if ((*it)->GetAsString(&switch_to_enable))
+            command_line->AppendSwitch(switch_to_enable);
+        }
+      }
+
       // Disable client-side phishing detection in the renderer if it is
       // disabled in the Profile preferences or the browser process.
       if (!prefs->GetBoolean(prefs::kSafeBrowsingEnabled) ||
           !g_browser_process->safe_browsing_detection_service()) {
         command_line->AppendSwitch(
             switches::kDisableClientSidePhishingDetection);
       }
 
       if (!prefs->GetBoolean(prefs::kPrintPreviewDisabled))
         command_line->AppendSwitch(switches::kRendererPrintPreview);
@@ skipping 1227 matching lines @@
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)
 
 }  // namespace chrome