Revert 160696 - Decouple EventClientImpl and root window. Check containers on the same root window …

ash/root_window_controller.h

Index: ash/root_window_controller.h
===================================================================
--- ash/root_window_controller.h	(revision 160706)
+++ ash/root_window_controller.h	(working copy)
@@ -25,6 +25,7 @@
 class ToplevelWindowEventHandler;
 namespace internal {
 
+class EventClientImpl;
 class RootWindowLayoutManager;
 class ScreenDimmer;
 class SystemBackgroundController;
@@ -100,6 +101,8 @@
   // desktop background image when displaying the login screen.
   scoped_ptr<SystemBackgroundController> background_;
 
+  // An event filter that pre-handles all key events to send them to an IME.
+  scoped_ptr<EventClientImpl> event_client_;
   scoped_ptr<ScreenDimmer> screen_dimmer_;
   scoped_ptr<WorkspaceController> workspace_controller_;