Implement GpuArcVideoService for arc video accelerator

components/arc/video/arc_video_bridge.h

Index: components/arc/video/arc_video_bridge.h
diff --git a/components/arc/video/arc_video_bridge.h b/components/arc/video/arc_video_bridge.h
new file mode 100644
index 0000000000000000000000000000000000000000..b4bd670d6bdb27c3cefc3f3e31394d1f5e3e1982
--- /dev/null
+++ b/components/arc/video/arc_video_bridge.h
@@ -0,0 +1,38 @@
+// 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.
+
+#ifndef COMPONENTS_ARC_VIDEO_ARC_VIDEO_BRIDGE_H
+#define COMPONENTS_ARC_VIDEO_ARC_VIDEO_BRIDGE_H
+
+#include "base/memory/scoped_ptr.h"
+#include "components/arc/arc_bridge_service.h"
+#include "components/arc/video/video_host_delegate.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace arc {
+
+class VideoHostDelegate;
+
+// ArcVideoBridge bridges ArcBridgeService and VideoHostDelegate. It observes
+// ArcBridgeService events and pass VideoHost proxy to VideoInstance.
+class ArcVideoBridge : public ArcBridgeService::Observer {
+ public:
+  ArcVideoBridge(scoped_ptr<VideoHostDelegate> video_host_delegate);

[Pawel Osciak, 2015/12/30 07:39:15]

explicit

[kcwu, 2015/12/30 09:40:33]

Done.

+  ~ArcVideoBridge() override;
+
+  // Starts listening to state changes of the ArcBridgeService.
+  void StartObservingBridgeServiceChanges();
+
+  // arc::ArcBridgeService::Observer implementation.
+  void OnStateChanged(arc::ArcBridgeService::State state) override;
+  void OnVideoInstanceReady() override;
+
+ private:
+  scoped_ptr<VideoHostDelegate> video_host_delegate_;
+  mojo::Binding<arc::VideoHost> binding_;
+};
+
+}  // namespace arc
+
+#endif  // COMPONENTS_ARC_VIDEO_ARC_VIDEO_BRIDGE_H