Provide real GPUSupport to ash for Chrome

ash/gpu_support_stub.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 "ash/gpu_support_stub.h"
+
+namespace ash {
+
+GPUSupportStub::GPUSupportStub() {}
+
+GPUSupportStub::~GPUSupportStub() {}
+
+bool GPUSupportStub::IsPanelFittingDisabled() const {
+  return false;
+}
+
+void GPUSupportStub::DisableGpuWatchdog() {}
+
+void GPUSupportStub::GetGpuProcessHandles(
+    const GetGpuProcessHandlesCallback& callback) const {}
+
+}  // namespace ash