cc: Implement shared worker contexts. (v1)

components/view_manager/surfaces/surfaces_context_provider.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 COMPONENTS_VIEW_MANAGER_SURFACES_SURFACES_CONTEXT_PROVIDER_H_
 #define COMPONENTS_VIEW_MANAGER_SURFACES_SURFACES_CONTEXT_PROVIDER_H_
 
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 41 matching lines @@
   void VerifyContexts() override {}
   void DeleteCachedResources() override {}
   bool DestroyedOnMainThread() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
   void SetMemoryPolicyChangedCallback(
       const MemoryPolicyChangedCallback& memory_policy_changed_callback)
       override {}
   void SetupLock() override;
   base::Lock* GetLock() override;
+  bool HasBeenDestroyed() override;
 
  protected:
   friend class base::RefCountedThreadSafe<SurfacesContextProvider>;
   ~SurfacesContextProvider() override;
 
  private:
   // CommandBufferLocalClient:
   void UpdateVSyncParameters(int64_t timebase, int64_t interval) override;
   void DidLoseContext() override;
 
@@ skipping 12 matching lines @@
   scoped_ptr<gles2::CommandBufferLocal> command_buffer_local_;
 
   base::Lock context_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesContextProvider);
 };
 
 }  // namespace surfaces
 
 #endif  // COMPONENTS_VIEW_MANAGER_SURFACES_SURFACES_CONTEXT_PROVIDER_H_