Remove WmLookup.

ash/shell.h

 // Copyright (c) 2012 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 ASH_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 144 matching lines @@
 
   // Returns true if the ash shell has been instantiated.
   static bool HasInstance();
 
   static void DeleteInstance();
 
   // Returns the root window controller for the primary root window.
   // TODO(oshima): move this to |RootWindowController|
   static RootWindowController* GetPrimaryRootWindowController();
 
+  // Return RootWindowController* if RootWindowController with specified

[sky, 2017/03/02 23:49:57]

How about: Returns the RootWindowController for the given display id. If there
is no display for |display_id|, null is returned.

[thanhph1, 2017/03/03 16:29:53]

Done, sounds good!

+  // display id exists.
+  static RootWindowController* GetRootWindowControllerWithDisplayId(
+      int64_t display_id);
+
   // Returns all root window controllers.
   // TODO(oshima): move this to |RootWindowController|
   static RootWindowControllerList GetAllRootWindowControllers();
 
   // Returns the primary root Window. The primary root Window is the one that
   // has a launcher.
   static aura::Window* GetPrimaryRootWindow();
 
   // Returns a root Window when used as a target when creating a new window.
   // The root window of the active window is used in most cases, but can
@@ skipping 390 matching lines @@
   std::unique_ptr<ImmersiveHandlerFactoryAsh> immersive_handler_factory_;
 
   std::unique_ptr<AppListDelegateImpl> app_list_delegate_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_