[Android] Add a low-end device mode override flag

content/browser/renderer_host/render_process_host_impl.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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1100 matching lines @@
 #if !defined (GOOGLE_CHROME_BUILD)
     // These are unsupported and not fully tested modes, so don't enable them
     // for official Google Chrome builds.
     switches::kInProcessPlugins,
 #endif  // GOOGLE_CHROME_BUILD
 #if defined(GOOGLE_TV)
     switches::kUseExternalVideoSurfaceThresholdInPixels,
 #endif
 #if defined(OS_ANDROID)
     switches::kDisableGestureRequirementForMediaPlayback,
+    switches::kDisableLowEndDeviceMode,
     switches::kDisableWebRTC,
+    switches::kEnableLowEndDeviceMode,
     switches::kEnableSpeechRecognition,
     switches::kHideScrollbars,
     switches::kMediaDrmEnableNonCompositing,
     switches::kNetworkCountryIso,
 #endif
 #if defined(OS_MACOSX)
     // Allow this to be set when invoking the browser and relayed along.
     switches::kEnableSandboxLogging,
 #endif
 #if defined(OS_POSIX)
@@ skipping 764 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content