aura: Clean up compositor initialization/destruction.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index f95a70e40e947de0ed18ae0937aad329d08556cc..fd11407aa87c441f3ddb68e150869b3f306f39a8 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1224,6 +1224,7 @@ void RenderWidgetHostViewAura::CopyFromCompositingSurfaceToVideoFrame(
     return;
   }
 
+  LOG(INFO) << "SEND Frame to CopyOutputRequest";
   scoped_ptr<cc::CopyOutputRequest> request =
       cc::CopyOutputRequest::CreateRequest(base::Bind(
           &RenderWidgetHostViewAura::
@@ -1375,6 +1376,7 @@ void RenderWidgetHostViewAura::SwapBuffersCompleted(
                                      current_surface_->size())),
           frame,
           base::Bind(callback, present_time));
+      LOG(INFO) << "SEND Frame to CopyFromCompositingSurfaceToVideoFrame";
     }
   }
 
@@ -1851,6 +1853,8 @@ void RenderWidgetHostViewAura::CopyFromCompositingSurfaceHasResultForVideo(
     scoped_ptr<cc::CopyOutputResult> result) {
   base::ScopedClosureRunner scoped_callback_runner(base::Bind(callback, false));
 
+  LOG(INFO) << "CopyFromCompositingSurfaceHasResultForVideo";
+
   if (!rwhva)
     return;
 
@@ -1930,11 +1934,13 @@ void RenderWidgetHostViewAura::CopyFromCompositingSurfaceHasResultForVideo(
       &CopyFromCompositingSurfaceFinishedForVideo,
       callback,
       texture_mailbox->callback());
+  LOG(INFO) << "Pass video frame to Readback YUV";
   yuv_readback_pipeline->ReadbackYUV(
       texture_mailbox->name(),
       texture_mailbox->sync_point(),
       video_frame.get(),
       finished_callback);
+  LOG(INFO) << "Done with it here.";
 }
 
 void RenderWidgetHostViewAura::GetScreenInfo(WebScreenInfo* results) {