Add switch to disable recording whole document

content/renderer/render_widget.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_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 495 matching lines @@
 }
 
 bool RenderWidget::UsingSynchronousRendererCompositor() const {
 #if defined(OS_ANDROID)
   return SynchronousCompositorFactory::GetInstance() != NULL;
 #else
   return false;
 #endif
 }
 
+bool RenderWidget::CompositorRecordsDocument() const {
+#if defined(OS_ANDROID)
+  SynchronousCompositorFactory* factory =
+      SynchronousCompositorFactory::GetInstance();

[jamesr, 2014/07/01 22:17:10]

if this is just accessing statics, why is it on RenderWidget? why not put this
code in RenderWidgetCompositor directly? it doesn't depend on any state that the
RenderWidget owns.

[boliu, 2014/07/01 22:22:05]

Following the pattern of UsingSynchronousRendererCompositor above. I think it
can be moved to RenderWidgetCompositor too?

+  return factory && factory->RecordDocument();
+#else
+  return false;
+#endif
+}
+
 void RenderWidget::EnableScreenMetricsEmulation(
     const WebDeviceEmulationParams& params) {
   if (!screen_metrics_emulator_)
     screen_metrics_emulator_.reset(new ScreenMetricsEmulator(this, params));
   else
     screen_metrics_emulator_->ChangeEmulationParams(params);
 }
 
 void RenderWidget::DisableScreenMetricsEmulation() {
   screen_metrics_emulator_.reset();
@@ skipping 1539 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content