Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

webkit/common/gpu/context_provider_in_process.h

 // Copyright (c) 2013 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 WEBKIT_COMMON_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_
 #define WEBKIT_COMMON_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 35 matching lines @@
   // cc_blink::ContextProviderWebContext:
   blink::WebGraphicsContext3D* WebContext3D() override;
 
   // cc::ContextProvider:
   bool BindToCurrentThread() override;
   void DetachFromThread() override;
   Capabilities ContextCapabilities() override;
   ::gpu::gles2::GLES2Interface* ContextGL() override;
   ::gpu::ContextSupport* ContextSupport() override;
   class GrContext* GrContext() override;
+  void DoInvalidateGrContext(uint32_t state) override;
   void SetupLock() override;
   base::Lock* GetLock() override;
   bool IsContextLost() override;
   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)
@@ skipping 21 matching lines @@
 
   cc::ContextProvider::Capabilities capabilities_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextProviderInProcess);
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // WEBKIT_COMMON_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_