Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

cc/test/test_context_provider.cc

 // Copyright 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.
 
 #include "cc/test/test_context_provider.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 94 matching lines @@
   gr_context_ = skia::AdoptRef(GrContext::Create(
       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(gl_context->gl())));
 
   // If GlContext is already lost, also abandon the new GrContext.
   if (IsContextLost())
     gr_context_->abandonContext();
 
   return gr_context_.get();
 }
 
+void TestContextProvider::InvalidateGrContext(uint32_t state) {
+  DCHECK(bound_);
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+
+  if (gr_context_)
+    gr_context_.get()->resetContext(state);

[danakj, 2015/10/13 22:55:54]

foo_.get()->bar() should be written foo_->bar()

+}
+
 void TestContextProvider::SetupLock() {
 }
 
 base::Lock* TestContextProvider::GetLock() {
   return &context_lock_;
 }
 
 bool TestContextProvider::IsContextLost() {
   DCHECK(bound_);
   DCHECK(context_thread_checker_.CalledOnValidThread());
@@ skipping 66 matching lines @@
   DCHECK(memory_policy_changed_callback_.is_null() || cb.is_null());
   memory_policy_changed_callback_ = cb;
 }
 
 void TestContextProvider::SetMaxTransferBufferUsageBytes(
     size_t max_transfer_buffer_usage_bytes) {
   context3d_->SetMaxTransferBufferUsageBytes(max_transfer_buffer_usage_bytes);
 }
 
 }  // namespace cc