Require an explicit ServiceName annotation for interfaces in C++.

mojo/services/window_manager/interfaces/window_manager_internal.mojom

 // Copyright 2014 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.
 
 [DartPackage="mojo_services"]
 module mojo;
 
 import "geometry/interfaces/geometry.mojom";
 import "input_events/interfaces/input_events.mojom";
 
 // WindowManagerInternal is an interface provided by the WindowManager
 // exclusively to the ViewManager.
+[ServiceName="mojo::WindowManagerInternal"]
 interface WindowManagerInternal {
   // Creates a connection to the WindowManager specifically for a connection to
   // the ViewManager. |connection_id| is the id of the connection to the
   // ViewManager. See view_manager.mojom for details on the id.
   CreateWindowManagerForViewManagerClient(
       uint16 connection_id,
       handle<message_pipe> window_manager_pipe);
 
   SetViewManagerClient(handle<message_pipe> view_manager_client_request);
 };
 
 // WindowManagerInternalClient is an interface provide by the ViewManager
 // exclusively to the WindowManager. It provides functionality only available
 // to the WindowManager.
+[ServiceName="mojo::WindowManagerInternalClient"]
 interface WindowManagerInternalClient {
   // Dispatches the specified input event to the specified view.
   DispatchInputEventToView(uint32 view_id, mojo.Event event);
 
   // Sets the native viewport size.
   SetViewportSize(mojo.Size size);
 
   // Clones the tree rooted at |view_id|. When the animation completes the clone
   // is destroyed.
   // TODO(sky): add actual animation.
   // TODO(sky): I think this only makes sense when destroying (view is
   // already visible), should it be named to indicate this?
   CloneAndAnimate(uint32 view_id);
 };