content: Add command line flag for native GPU memory buffers.

content/renderer/render_thread_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.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 502 matching lines @@
 
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
   // TODO(danakj): If changing these also update NumberOfRendererRasterThreads
   // in compositor_util.cc. We should be using methods from compositor_util here
   // instead of inspecting flags.
   is_one_copy_enabled_ = command_line.HasSwitch(switches::kEnableOneCopy);
 #else
   is_one_copy_enabled_ = !command_line.HasSwitch(switches::kDisableOneCopy);
 #endif
 
+  use_image_external_ = command_line.HasSwitch(switches::kUseImageExternal);
+
   if (command_line.HasSwitch(switches::kDisableLCDText)) {
     is_lcd_text_enabled_ = false;
   } else if (command_line.HasSwitch(switches::kEnableLCDText)) {
     is_lcd_text_enabled_ = true;
   } else {
 #if defined(OS_ANDROID)
     is_lcd_text_enabled_ = false;
 #else
     is_lcd_text_enabled_ = true;
 #endif
@@ skipping 1099 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content