exo: Recreate Surface resources on context lost.

ui/compositor/test/in_process_context_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 UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_
 #define UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_
 
 #include <stdint.h>
 #include <memory>
 
@@ skipping 23 matching lines @@
   InProcessContextFactory(bool context_factory_for_test,
                           cc::SurfaceManager* surface_manager);
   ~InProcessContextFactory() override;
 
   // If true (the default) an OutputSurface is created that does not display
   // anything. Set to false if you want to see results on the screen.
   void set_use_test_surface(bool use_test_surface) {
     use_test_surface_ = use_test_surface;
   }
 
+  // This is used to call OnLostResources on all clients, to ensure they stop
+  // using the SharedMainThreadContextProvider.
+  void SendOnLostResources();
+
   // ContextFactory implementation
   void CreateOutputSurface(base::WeakPtr<Compositor> compositor) override;
 
   std::unique_ptr<Reflector> CreateReflector(Compositor* mirrored_compositor,
                                              Layer* mirroring_layer) override;
   void RemoveReflector(Reflector* reflector) override;
 
   scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider() override;
   void RemoveCompositor(Compositor* compositor) override;
   bool DoesCreateTestContexts() override;
   uint32_t GetImageTextureTarget(gfx::BufferFormat format,
                                  gfx::BufferUsage usage) override;
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
   std::unique_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
   cc::SurfaceManager* GetSurfaceManager() override;
   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 {}
+  void AddObserver(ContextFactoryObserver* observer) override;
+  void RemoveObserver(ContextFactoryObserver* observer) override;
 
  private:
   scoped_refptr<InProcessContextProvider> shared_main_thread_contexts_;
   scoped_refptr<InProcessContextProvider> shared_worker_context_provider_;
   cc::TestSharedBitmapManager shared_bitmap_manager_;
   cc::TestGpuMemoryBufferManager gpu_memory_buffer_manager_;
   cc::TestImageFactory image_factory_;
   cc::TestTaskGraphRunner task_graph_runner_;
   uint32_t next_surface_id_namespace_;
   bool use_test_surface_;
   bool context_factory_for_test_;
   cc::SurfaceManager* surface_manager_;
+  base::ObserverList<ContextFactoryObserver> observer_list_;
 
   base::hash_map<Compositor*, std::unique_ptr<cc::Display>>
       per_compositor_data_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessContextFactory);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_