sync compositor: Handle context loss

content/renderer/android/synchronous_compositor_proxy.h

 // Copyright 2015 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_PROXY_H_
 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_PROXY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 34 matching lines @@
     : public ui::SynchronousInputHandler,
       public SynchronousCompositorExternalBeginFrameSourceClient,
       public SynchronousCompositorOutputSurfaceClient {
  public:
   // Called by browser side.
   static void SetSkCanvasForDraw(SkCanvas* canvas);
 
   SynchronousCompositorProxy(
       int routing_id,
       IPC::Sender* sender,
-      SynchronousCompositorOutputSurface* output_surface,
       SynchronousCompositorExternalBeginFrameSource* begin_frame_source,
       ui::SynchronousInputHandlerProxy* input_handler_proxy,
       InputHandlerManagerClient::Handler* handler);
   ~SynchronousCompositorProxy() override;
 
   // ui::SynchronousInputHandler overrides.
   void SetNeedsSynchronousAnimateInput() override;
   void UpdateRootLayerState(const gfx::ScrollOffset& total_scroll_offset,
                             const gfx::ScrollOffset& max_scroll_offset,
                             const gfx::SizeF& scrollable_size,
                             float page_scale_factor,
                             float min_page_scale_factor,
                             float max_page_scale_factor) override;
 
   // SynchronousCompositorExternalBeginFrameSourceClient overrides.
   void OnNeedsBeginFramesChange(bool needs_begin_frames) override;
 
   // SynchronousCompositorOutputSurfaceClient overrides.
   void Invalidate() override;
   void SwapBuffers(uint32_t output_surface_id,
                    cc::CompositorFrame* frame) override;
 
+  void SetOutputSurface(SynchronousCompositorOutputSurface* output_surface);
   void OnMessageReceived(const IPC::Message& message);
   bool Send(IPC::Message* message);
   void DidOverscroll(const DidOverscrollParams& did_overscroll_params);
 
  private:
   struct SharedMemoryWithSize;
 
   void ProcessCommonParams(
       const SyncCompositorCommonBrowserParams& common_params);
   void PopulateCommonParams(SyncCompositorCommonRendererParams* params) const;
@@ skipping 30 matching lines @@
   void SwapBuffersSw(cc::CompositorFrame* frame);
   void SendDemandDrawSwReply(bool success,
                              cc::CompositorFrame* frame,
                              IPC::Message* reply_message);
   void DidActivatePendingTree();
   void DeliverMessages();
   void SendAsyncRendererStateIfNeeded();
 
   const int routing_id_;
   IPC::Sender* const sender_;
-  SynchronousCompositorOutputSurface* const output_surface_;
   SynchronousCompositorExternalBeginFrameSource* const begin_frame_source_;
   ui::SynchronousInputHandlerProxy* const input_handler_proxy_;
   InputHandlerManagerClient::Handler* const input_handler_;
   const bool use_in_process_zero_copy_software_draw_;
+  SynchronousCompositorOutputSurface* output_surface_;
   bool inside_receive_;
   IPC::Message* hardware_draw_reply_;
   IPC::Message* software_draw_reply_;
 
   // From browser.
   size_t bytes_limit_;
   scoped_ptr<SharedMemoryWithSize> software_draw_shm_;
 
   // To browser.
   mutable uint32_t version_;  // Mustable so PopulateCommonParams can be const.
   gfx::ScrollOffset total_scroll_offset_;  // Modified by both.
   gfx::ScrollOffset max_scroll_offset_;
   gfx::SizeF scrollable_size_;
   float page_scale_factor_;
   float min_page_scale_factor_;
   float max_page_scale_factor_;
   bool need_animate_scroll_;
   uint32_t need_invalidate_count_;
   bool need_begin_frame_;
   uint32_t did_activate_pending_tree_count_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_PROXY_H_