Implement isRenderingVSynced on RenderWidget

content/browser/web_contents/web_contents_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/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 55 matching lines @@
 #include "net/base/mime_util.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositor.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "ui/base/layout.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
+#include "ui/gl/gl_switches.h"
 #include "webkit/glue/web_intent_data.h"
 #include "webkit/glue/web_intent_service_data.h"
 #include "webkit/glue/webpreferences.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/foundation_util.h"
 #include "ui/surface/io_surface_support_mac.h"
 #endif
 
 // Cross-Site Navigations
@@ skipping 370 matching lines @@
   prefs.allow_file_access_from_file_urls =
       command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
   prefs.show_composited_layer_borders =
       command_line.HasSwitch(switches::kShowCompositedLayerBorders);
   prefs.show_composited_layer_tree =
       command_line.HasSwitch(switches::kShowCompositedLayerTree);
   prefs.show_fps_counter =
       command_line.HasSwitch(switches::kShowFPSCounter);
   prefs.show_paint_rects =
       command_line.HasSwitch(switches::kShowPaintRects);
+  prefs.render_vsync_enabled =
+      !command_line.HasSwitch(switches::kDisableGpuVsync);
   prefs.accelerated_compositing_enabled =
       GpuProcessHost::gpu_enabled() &&
       !command_line.HasSwitch(switches::kDisableAcceleratedCompositing);
   prefs.force_compositing_mode =
       command_line.HasSwitch(switches::kForceCompositingMode) &&
       !command_line.HasSwitch(switches::kDisableForceCompositingMode);
   prefs.fixed_position_compositing_enabled =
       command_line.HasSwitch(switches::kEnableCompositingForFixedPosition);
   prefs.accelerated_2d_canvas_enabled =
       GpuProcessHost::gpu_enabled() &&
@@ skipping 2650 matching lines @@
       browser_plugin_host()->embedder_render_process_host();
   *embedder_container_id = browser_plugin_host()->instance_id();
   int embedder_process_id =
       embedder_render_process_host ? embedder_render_process_host->GetID() : -1;
   if (embedder_process_id != -1) {
     *embedder_channel_name =
         StringPrintf("%d.r%d", render_view_host->GetProcess()->GetID(),
                      embedder_process_id);
   }
 }