exo: Recreate Surface resources on context lost.

content/browser/compositor/gpu_process_transport_factory.h

 // Copyright 2014 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_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 #define CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 54 matching lines @@
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
   void SetAuthoritativeVSyncInterval(ui::Compositor* compositor,
                                      base::TimeDelta interval) override;
   void SetOutputIsSecure(ui::Compositor* compositor, bool secure) override;
 
   // ImageTransportFactory implementation.
   ui::ContextFactory* GetContextFactory() override;
   cc::SurfaceManager* GetSurfaceManager() override;
   display_compositor::GLHelper* GetGLHelper() override;
-  void AddObserver(ImageTransportFactoryObserver* observer) override;
-  void RemoveObserver(ImageTransportFactoryObserver* observer) override;
 #if defined(OS_MACOSX)
   void SetCompositorSuspendedForRecycle(ui::Compositor* compositor,
                                         bool suspended) override;
 #endif
 
  private:
   struct PerCompositorData;
 
   PerCompositorData* CreatePerCompositorData(ui::Compositor* compositor);
   std::unique_ptr<cc::SoftwareOutputDevice> CreateSoftwareOutputDevice(
       ui::Compositor* compositor);
   void EstablishedGpuChannel(base::WeakPtr<ui::Compositor> compositor,
                              bool create_gpu_output_surface,
                              int num_attempts);
 
   void OnLostMainThreadSharedContextInsideCallback();
   void OnLostMainThreadSharedContext();
 
   scoped_refptr<cc::VulkanInProcessContextProvider>
   SharedVulkanContextProvider();
 
   typedef std::map<ui::Compositor*, PerCompositorData*> PerCompositorDataMap;
   PerCompositorDataMap per_compositor_data_;
   scoped_refptr<ContextProviderCommandBuffer> shared_main_thread_contexts_;
   std::unique_ptr<display_compositor::GLHelper> gl_helper_;
-  base::ObserverList<ImageTransportFactoryObserver> observer_list_;
   std::unique_ptr<cc::SurfaceManager> surface_manager_;
   uint32_t next_surface_id_namespace_;
   std::unique_ptr<cc::SingleThreadTaskGraphRunner> task_graph_runner_;
   scoped_refptr<ContextProviderCommandBuffer> shared_worker_context_provider_;
 
   bool shared_vulkan_context_provider_initialized_ = false;
   scoped_refptr<cc::VulkanInProcessContextProvider>
       shared_vulkan_context_provider_;
 
 #if defined(OS_WIN)
   std::unique_ptr<OutputDeviceBacking> software_backing_;
 #endif
   base::WeakPtrFactory<GpuProcessTransportFactory> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessTransportFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_