cc: Use the correct internal format for glCopyTexImage2D calls.

ui/compositor/test/in_process_context_provider.cc

 // Copyright (c) 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 "ui/compositor/test/in_process_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 142 matching lines @@
 
   if (gr_context_)
     gr_context_->FreeGpuResources();
 }
 
 void InProcessContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   // Pixel tests do not test lost context.
 }
 
+uint32_t InProcessContextProvider::GetCopyTextureInternalFormat() {
+  if (attribs_.alpha_size > 0)
+    return GL_RGBA;
+  DCHECK_NE(attribs_.red_size, 0);
+  DCHECK_NE(attribs_.green_size, 0);
+  DCHECK_NE(attribs_.blue_size, 0);
+  return GL_RGB;
+}
+
 }  // namespace ui