Clear page display after navigation if no rendered output arrives

content/browser/renderer_host/render_widget_host_view_android.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/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/build_info.h"
 #include "base/basictypes.h"
@@ skipping 1131 matching lines @@
   // any potential compositor scheduling.
   OnFrameMetadataUpdated(metadata);
 }
 
 void RenderWidgetHostViewAndroid::OnSwapCompositorFrame(
     uint32 output_surface_id,
     scoped_ptr<cc::CompositorFrame> frame) {
   InternalSwapCompositorFrame(output_surface_id, frame.Pass());
 }
 
+void RenderWidgetHostViewAndroid::ClearCompositorFrame() {
+  DestroyDelegatedContent();
+}
+
 void RenderWidgetHostViewAndroid::RetainFrame(
     uint32 output_surface_id,
     scoped_ptr<cc::CompositorFrame> frame) {
   DCHECK(locks_on_frame_count_);
 
   // Store the incoming frame so that it can be swapped when all the locks have
   // been released. If there is already a stored frame, then replace and skip
   // the previous one but make sure we still eventually send the ACK. Holding
   // the ACK also blocks the renderer when its max_frames_pending is reached.
   if (last_frame_info_) {
@@ skipping 851 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content