ozone: Add UiThreadGpu for applications that do UI thread GL

ui/ozone/public/ui_thread_gpu.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/public/ui_thread_gpu.h"
+
+#include "ipc/ipc_listener.h"
+#include "ipc/ipc_message.h"
+#include "ipc/ipc_sender.h"
+#include "ui/ozone/public/gpu_platform_support.h"
+#include "ui/ozone/public/gpu_platform_support_host.h"
+#include "ui/ozone/public/ozone_platform.h"
+
+namespace ui {
+
+class UiThreadGpuForwardingSender : public IPC::Sender {
+ public:
+  explicit UiThreadGpuForwardingSender(IPC::Listener* listener)
+      : listener_(listener) {}
+  virtual ~UiThreadGpuForwardingSender() {}
+
+  // IPC::Sender:
+  virtual bool Send(IPC::Message* msg) OVERRIDE {
+    listener_->OnMessageReceived(*msg);
+    delete msg;
+    return true;
+  }
+
+ private:
+  IPC::Listener* listener_;
+};
+
+UiThreadGpu::UiThreadGpu() {
+}
+
+UiThreadGpu::~UiThreadGpu() {
+}
+
+bool UiThreadGpu::Initialize() {
+  OzonePlatform* platform = ui::OzonePlatform::GetInstance();
+
+  ui_sender_.reset(
+      new UiThreadGpuForwardingSender(platform->GetGpuPlatformSupportHost()));
+  gpu_sender_.reset(
+      new UiThreadGpuForwardingSender(platform->GetGpuPlatformSupport()));
+
+  const int kHostId = 1;
+  platform->GetGpuPlatformSupportHost()->OnChannelEstablished(
+      kHostId, gpu_sender_.get());
+  platform->GetGpuPlatformSupport()->OnChannelEstablished(ui_sender_.get());
+
+  return true;
+}
+
+}  // namespace ui