Revert of ozone: gpu: Add plumbing for platform-specific gpu messaging

ui/ozone/gpu/gpu_platform_support.cc

-// Copyright 2014 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/ozone/gpu/gpu_platform_support.h"
-
-#include "base/logging.h"
-#include "ui/ozone/ozone_export.h"
-
-namespace ui {
-
-namespace {
-
-// No-op implementation of GpuPlatformSupport.
-class OZONE_EXPORT StubGpuPlatformSupport : public GpuPlatformSupport {
- public:
-  // GpuPlatformSupport:
-  virtual void OnChannelEstablished(IPC::Sender* sender) {}
-  bool OnMessageReceived(const IPC::Message&) OVERRIDE { return false; }
-};
-
-}  // namespace
-
-GpuPlatformSupport::GpuPlatformSupport() {
-}
-
-GpuPlatformSupport::~GpuPlatformSupport() {
-}
-
-GpuPlatformSupport* CreateStubGpuPlatformSupport() {
-  return new StubGpuPlatformSupport;
-}
-
-}  // namespace ui