Change renderer compositor command buffer to be 64kB

content/renderer/render_widget.h

Index: content/renderer/render_widget.h
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index db91063211b7383feec2771cb02f24db8269129f..13acc4d49a763665f330e96b2d7b7b8c68a0f53b 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -592,7 +592,8 @@ class CONTENT_EXPORT RenderWidget
   virtual void didUpdateTextOfFocusedElementByNonUserInput();
 
   // Creates a 3D context associated with this view.
-  scoped_ptr<WebGraphicsContext3DCommandBufferImpl> CreateGraphicsContext3D();
+  scoped_ptr<WebGraphicsContext3DCommandBufferImpl> CreateGraphicsContext3D(
+      bool compositor);
 
   // Routing ID that allows us to communicate to the parent browser process
   // RenderWidgetHost. When MSG_ROUTING_NONE, no messages may be sent.