cc: Use the correct internal format for glCopyTexImage2D calls.

android_webview/browser/aw_render_thread_context_provider.cc

 // Copyright 2015 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 "android_webview/browser/aw_render_thread_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 57 matching lines @@
   context_->GetImplementation()->SetLostContextCallback(base::Bind(
       &AwRenderThreadContextProvider::OnLostContext, base::Unretained(this)));
 }
 
 AwRenderThreadContextProvider::~AwRenderThreadContextProvider() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   if (gr_context_)
     gr_context_->releaseResourcesAndAbandonContext();
 }
 
+uint32_t AwRenderThreadContextProvider::GetCopyTextureInternalFormat() {
+  // The attributes used in the constructor included an alpha channel.
+  return GL_RGBA;
+}
+
 bool AwRenderThreadContextProvider::BindToCurrentThread() {
   // This is called on the thread the context will be used.
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   return true;
 }
 
 gpu::Capabilities AwRenderThreadContextProvider::ContextCapabilities() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   return context_->GetImplementation()->capabilities();
@@ skipping 56 matching lines @@
 void AwRenderThreadContextProvider::OnLostContext() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (!lost_context_callback_.is_null())
     lost_context_callback_.Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
 }  // namespace android_webview