Add switch to disable recording whole document

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 93efaa57403be643d9883fe54cf409cb77e6ae52..90390805cea909d1c82cee3bf798f67649673b94 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -513,6 +513,16 @@ bool RenderWidget::UsingSynchronousRendererCompositor() const {
 #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_)