Android WebView: Crash on compositor context loss

content/renderer/android/synchronous_compositor_output_surface.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 46 matching lines @@
       const scoped_refptr<cc::ContextProvider>& context_provider,
       const scoped_refptr<cc::ContextProvider>& worker_context_provider,
       int routing_id,
       SynchronousCompositorRegistry* registry,
       scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue);
   ~SynchronousCompositorOutputSurface() override;
 
   void SetSyncClient(SynchronousCompositorOutputSurfaceClient* compositor);
 
   // OutputSurface.
+  void DidLoseOutputSurface() override;
   bool BindToClient(cc::OutputSurfaceClient* surface_client) override;
   void DetachFromClient() override;
   void Reshape(const gfx::Size& size,
                float scale_factor,
                bool has_alpha) override;
   void SwapBuffers(cc::CompositorFrame* frame) override;
   void Invalidate() override;
 
   // Partial SynchronousCompositor API implementation.
   scoped_ptr<cc::CompositorFrame> DemandDrawHw(
@@ skipping 40 matching lines @@
   scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_