cc: Implement shared worker contexts. (v1)

ui/compositor/test/in_process_context_provider.h

Index: ui/compositor/test/in_process_context_provider.h
diff --git a/ui/compositor/test/in_process_context_provider.h b/ui/compositor/test/in_process_context_provider.h
index 0f5f35f14123a1cebeb89f9ffd23b8d82424819d..8e236357249124071287d1c8ce7f686b2552f1e9 100644
--- a/ui/compositor/test/in_process_context_provider.h
+++ b/ui/compositor/test/in_process_context_provider.h
@@ -38,14 +38,7 @@ class InProcessContextProvider : public cc::ContextProvider {
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       gpu::ImageFactory* image_factory);
 
- private:
-  InProcessContextProvider(
-      const gpu::gles2::ContextCreationAttribHelper& attribs,
-      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
-      gpu::ImageFactory* image_factory,
-      gfx::AcceleratedWidget window,
-      const std::string& debug_name);
-  ~InProcessContextProvider() override;
+  void Destroy();
 
   // cc::ContextProvider:
   bool BindToCurrentThread() override;
@@ -59,12 +52,22 @@ class InProcessContextProvider : public cc::ContextProvider {
   base::Lock* GetLock() override;
   void VerifyContexts() override;
   void DeleteCachedResources() override;
-  bool DestroyedOnMainThread() override;
+  bool HasBeenLostOnMainThread() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
   void SetMemoryPolicyChangedCallback(
       const MemoryPolicyChangedCallback& memory_policy_changed_callback)
       override;
+  bool HasBeenDestroyed() override;
+
+ private:
+  InProcessContextProvider(
+      const gpu::gles2::ContextCreationAttribHelper& attribs,
+      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
+      gpu::ImageFactory* image_factory,
+      gfx::AcceleratedWidget window,
+      const std::string& debug_name);
+  ~InProcessContextProvider() override;
 
   void OnLostContext();
 
@@ -83,10 +86,11 @@ class InProcessContextProvider : public cc::ContextProvider {
 
   LostContextCallback lost_context_callback_;
 
-  base::Lock destroyed_lock_;
-  bool destroyed_;
+  base::Lock lost_lock_;
+  bool lost_;
 
   base::Lock context_lock_;
+  bool destroyed_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessContextProvider);
 };