Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

webkit/common/gpu/context_provider_in_process.h

Index: webkit/common/gpu/context_provider_in_process.h
diff --git a/webkit/common/gpu/context_provider_in_process.h b/webkit/common/gpu/context_provider_in_process.h
index dcb053a648db3a9bbea7dd6b16b11427f885cf49..d547fcfab90131a91792eebb88e83c0dd0adc73d 100644
--- a/webkit/common/gpu/context_provider_in_process.h
+++ b/webkit/common/gpu/context_provider_in_process.h
@@ -53,6 +53,7 @@ class WEBKIT_GPU_EXPORT ContextProviderInProcess
   ::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;