Add IPC messages for ARC notification

components/arc/arc_bridge_service_impl.h

Index: components/arc/arc_bridge_service_impl.h
diff --git a/components/arc/arc_bridge_service_impl.h b/components/arc/arc_bridge_service_impl.h
index d65e712c538697db9b284f0f32764f819802962c..4ebfc754de891282c8c72410a7829bdda50253cd 100644
--- a/components/arc/arc_bridge_service_impl.h
+++ b/components/arc/arc_bridge_service_impl.h
@@ -38,6 +38,9 @@ class ArcBridgeServiceImpl : public ArcBridgeService,
                            const std::string& device_type,
                            base::ScopedFD fd) override;
 
+  bool SendNotificationEventToAndroid(const std::string& key,
+                                      ArcNotificationEvent event) override;
+
  private:
   friend class ArcBridgeTest;
   FRIEND_TEST_ALL_PREFIXES(ArcBridgeTest, Basic);
@@ -57,6 +60,9 @@ class ArcBridgeServiceImpl : public ArcBridgeService,
       const base::FilePath& socket_path,
       bool directory_present);
 
+  // Checks if the IPC channel is ready to send messages to Android.
+  bool SendMessageIfReady(IPC::Message* message);
+
   // Internal connection method. Separated to make testing easier.
   bool Connect(const IPC::ChannelHandle& handle, IPC::Channel::Mode mode);
 
@@ -69,6 +75,10 @@ class ArcBridgeServiceImpl : public ArcBridgeService,
 
   // Called when the instance has reached a boot phase
   void OnInstanceBootPhase(InstanceBootPhase phase);
+  // Handler for ArcInstanceHostMsg_NotificationPosted message.
+  void OnNotificationPostedFromAndroid(const ArcNotificationData& data);
+  // Handler for ArcInstanceHostMsg_NotificationRemoved message.
+  void OnNotificationRemovedFromAndroid(const std::string& key);
 
   // IPC::Listener:
   bool OnMessageReceived(const IPC::Message& message) override;