chromeos: makes mus send keyevents to display root when nothing has focus

services/ui/ws/window_manager_state.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 SERVICES_UI_WS_WINDOW_MANAGER_STATE_H_
 #define SERVICES_UI_WS_WINDOW_MANAGER_STATE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 169 matching lines @@
       std::unique_ptr<WindowManagerDisplayRoot> display_root);
 
   // Called when a Display is deleted.
   void OnDisplayDestroying(Display* display);
 
   // Sets the visibility of all window manager roots windows to |value|.
   void SetAllRootWindowsVisible(bool value);
 
   // Returns the ServerWindow that is the root of the WindowManager for
   // |window|. |window| corresponds to the root of a Display.
-  ServerWindow* GetWindowManagerRoot(ServerWindow* window);
+  ServerWindow* GetWindowManagerRootForDisplayRoot(ServerWindow* window);
+
+  // Returns the ServerWindow that is used as the root of the WindowTree for
+  // |display_root|.
+  ServerWindow* GetWindowManagerRoot(WindowManagerDisplayRoot* display_root);
 
   // Called from the callback supplied to WindowTree::OnAccelerator().
   void OnAcceleratorAck(
       mojom::EventResult result,
       const std::unordered_map<std::string, std::vector<uint8_t>>& properties);
 
   // Called from the callback supplied to WindowTree::DispatchInputEvent().
   void OnEventAck(mojom::WindowTree* tree, mojom::EventResult result);
 
   // Called if the client doesn't ack an event in the appropriate amount of
@@ skipping 94 matching lines @@
   // destroyed.
   WindowManagerDisplayRoots orphaned_window_manager_display_roots_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerState);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_MANAGER_STATE_H_