arc-bridge: establish connections with arc video accelerator

components/arc/arc_bridge_service.h

Index: components/arc/arc_bridge_service.h
diff --git a/components/arc/arc_bridge_service.h b/components/arc/arc_bridge_service.h
index e3417bc985756c0db52044b339df84c9da3d350b..f9fc6e896533d6ccc8cb5e08447edabfbadc80e9 100644
--- a/components/arc/arc_bridge_service.h
+++ b/components/arc/arc_bridge_service.h
@@ -8,16 +8,21 @@
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/sequenced_task_runner.h"
+#include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"
 
+namespace content {
+class GpuArcAcceleratorHost;
+}
+
 namespace arc {
 
 // The Chrome-side service that handles ARC instances and ARC bridge creation.
 // This service handles the lifetime of ARC instances and sets up the
 // communication channel (the ARC bridge) used to send and receive messages.
-class ArcBridgeService : public IPC::Listener {
+class ArcBridgeService : public IPC::Listener, public IPC::Sender {
  public:
   // The possible states of the bridge.  In the normal flow, the state changes
   // in the following sequence:
@@ -80,6 +85,9 @@ class ArcBridgeService : public IPC::Listener {
   // called on the thread that this class was created on.
   static ArcBridgeService* Get();
 
+  // IPC::Sender:
+  bool Send(IPC::Message* message) override;
+
   // DetectAvailability() should be called once D-Bus is available. It will
   // call CheckArcAvailability() on the session_manager. This can only be
   // called on the thread that this class was created on.
@@ -148,6 +156,12 @@ class ArcBridgeService : public IPC::Listener {
   // interaction.
   void OnInstanceReady();
 
+  void OnCreateArcVideoAccelerator(uint32_t device_type,
+                                   IPC::Message* reply_msg);
+  void ReplyCreateArcVideoAccelerator(IPC::Message* reply,
+                                      IPC::ChannelHandle handle,
+                                      uint32_t result);
+
   // Changes the current state and notifies all observers.
   void SetState(State state);
 
@@ -159,6 +173,7 @@ class ArcBridgeService : public IPC::Listener {
   void OnInstanceStarted(bool success);
   void OnInstanceStopped(bool success);
 
+  scoped_ptr<content::GpuArcAcceleratorHost> gpu_arc_accelerator_host_;
   scoped_refptr<base::SequencedTaskRunner> origin_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> ipc_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> file_task_runner_;