arc: Remove ArcServiceManager::Observer

components/arc/intent_helper/arc_intent_helper_bridge.h

 // Copyright 2016 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_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 #define COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 68 matching lines @@
 
   // Filters out handlers that belong to the intent_helper apk and returns
   // a new array.
   static std::vector<mojom::IntentHandlerInfoPtr> FilterOutIntentHelper(
       std::vector<mojom::IntentHandlerInfoPtr> handlers);
 
   // Checks if the intent helper interface is available. When it is not, returns
   // false and updates |out_error_code| if it's not nullptr.
   static bool IsIntentHelperAvailable(GetResult* out_error_code);
 
+  // For supporting ArcServiceManager::GetService<T>().
+  static const char kArcServiceName[];
+
   static const char kArcIntentHelperPackageName[];
 
  private:
   mojo::Binding<mojom::IntentHelperHost> binding_;
   scoped_refptr<ActivityIconLoader> icon_loader_;
   scoped_refptr<LocalActivityResolver> activity_resolver_;
 
   base::ThreadChecker thread_checker_;
 
   base::ObserverList<ArcIntentHelperObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcIntentHelperBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_