Remove window_manager.mojom.

components/arc/arc_service_manager.h

Index: components/arc/arc_service_manager.h
diff --git a/components/arc/arc_service_manager.h b/components/arc/arc_service_manager.h
index ac2f4a552aa7b901fe54517868f44887a62bb1ef..256a1992eb906e9eeac10793e6c46e492ab53e8b 100644
--- a/components/arc/arc_service_manager.h
+++ b/components/arc/arc_service_manager.h
@@ -46,9 +46,6 @@ class ArcServiceManager {
       const AccountId& account_id,
       std::unique_ptr<BooleanPrefMember> arc_enabled_pref);
 
-  // Called once the windowing system (ash) has been started.
-  void OnAshStarted();
-
   // Called to shut down all ARC services.
   void Shutdown();
 
@@ -78,10 +75,6 @@ class ArcServiceManager {
   scoped_refptr<ActivityIconLoader> icon_loader_;
   scoped_refptr<LocalActivityResolver> activity_resolver_;
 
-  // True once the window manager service got added, barring adding any more
-  // of those since OnAshStarted() might be called multiple times.
-  bool on_ash_started_called_ = false;
-
   DISALLOW_COPY_AND_ASSIGN(ArcServiceManager);
 };