Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

webkit/common/gpu/context_provider_in_process.cc

Index: webkit/common/gpu/context_provider_in_process.cc
diff --git a/webkit/common/gpu/context_provider_in_process.cc b/webkit/common/gpu/context_provider_in_process.cc
index 87b5df6297239a73083d1b8af17e1092ff1d787b..223fc89cfbde9e0bace65ac362fd3d2719c470eb 100644
--- a/webkit/common/gpu/context_provider_in_process.cc
+++ b/webkit/common/gpu/context_provider_in_process.cc
@@ -160,6 +160,14 @@ class GrContext* ContextProviderInProcess::GrContext() {
   return gr_context_->get();
 }
 
+void ContextProviderInProcess::InvalidateGrContext(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 ContextProviderInProcess::SetupLock() {
   context3d_->SetLock(&context_lock_);
 }