arc: Remove ArcServiceManager::Observer

components/arc/intent_helper/arc_intent_helper_bridge.h

Index: components/arc/intent_helper/arc_intent_helper_bridge.h
diff --git a/components/arc/intent_helper/arc_intent_helper_bridge.h b/components/arc/intent_helper/arc_intent_helper_bridge.h
index 75219f49920c8ba70ce31625b9f6febe22d7be44..d21a4e88819be298e30d58a46fe1d5b84689e3b5 100644
--- a/components/arc/intent_helper/arc_intent_helper_bridge.h
+++ b/components/arc/intent_helper/arc_intent_helper_bridge.h
@@ -30,6 +30,7 @@ namespace arc {
 
 class ActivityIconLoader;
 class ArcBridgeService;
+class ArcServiceManager;
 class IntentFilter;
 class LocalActivityResolver;
 
@@ -86,6 +87,13 @@ class ArcIntentHelperBridge
   // false and updates |out_error_code| if it's not nullptr.
   static bool IsIntentHelperAvailable(GetResult* out_error_code);
 
+  // Gets an ArcIntentHelperBridge instance in |service_manager|. Returns

[Luis Héctor Chávez, 2017/01/12 00:21:13]

nit: Gets the ArcIntentHelperBridge...

[Yusuke Sato, 2017/01/12 00:30:56]

Done (PS#4 doesn't have the function)

+  // nullptr if none found.
+  static ArcIntentHelperBridge* Get(ArcServiceManager* service_manager);
+
+  // For supporting ArcServiceManager::GetService<T>().
+  static const char kArcServiceName[];
+
   static const char kArcIntentHelperPackageName[];
 
  private: