cc:: Add remote mode to the compositor

cc/trees/remote_channel_host_client.h

+// 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 CC_TREES_REMOTE_CHANNEL_HOST_CLIENT_H_
+#define CC_TREES_REMOTE_CHANNEL_HOST_CLIENT_H_
+
+#include "base/macros.h"
+#include "cc/base/cc_export.h"
+#include "cc/trees/layer_tree_settings.h"
+
+namespace cc {
+
+class RemoteChannelHostClient {
+ public:
+  // Allows the client to override any LayerTreeSettings received from the
+  // main compositor.
+  virtual void OverrideLayerTreeSettings(LayerTreeSettings* settings) {}
+
+  // Informs the client that the RemoteChannelHost has been shutdown. The
+  // RemoteChannelHost can not be used after this method is called.
+  virtual void DidShutdown() = 0;
+
+  virtual ~RemoteChannelHostClient() {}
+};
+
+}  // namespace cc
+
+#endif  // CC_TREES_REMOTE_CHANNEL_HOST_CLIENT_H_