Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

content/common/gpu/client/context_provider_command_buffer.cc

Index: content/common/gpu/client/context_provider_command_buffer.cc
diff --git a/content/common/gpu/client/context_provider_command_buffer.cc b/content/common/gpu/client/context_provider_command_buffer.cc
index 439e14f4fc1e49a9f57be80f56e5da5e9cec1cbd..7da186f9b324e277e31b6f841637db9ee9d929b4 100644
--- a/content/common/gpu/client/context_provider_command_buffer.cc
+++ b/content/common/gpu/client/context_provider_command_buffer.cc
@@ -11,7 +11,6 @@
 #include "base/strings/stringprintf.h"
 #include "cc/output/managed_memory_policy.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
-#include "third_party/skia/include/gpu/GrContext.h"
 #include "webkit/common/gpu/grcontext_for_webgraphicscontext3d.h"
 
 namespace content {
@@ -142,6 +141,14 @@ class GrContext* ContextProviderCommandBuffer::GrContext() {
   return gr_context_->get();
 }
 
+void ContextProviderCommandBuffer::DoInvalidateGrContext(uint32_t state) {
+  if (gr_context_) {
+    DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
+    DCHECK(context_thread_checker_.CalledOnValidThread());
+    gr_context_->get()->resetContext(state);
+  }
+}
+
 void ContextProviderCommandBuffer::SetupLock() {
   DCHECK(context3d_);
   context3d_->GetCommandBufferProxy()->SetLock(&context_lock_);