mash: Remove WmRootWindowControllerObserver.

ash/common/wm/workspace/workspace_layout_manager.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_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_
 #define ASH_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_
 
 #include <memory>
 #include <set>
 
 #include "ash/ash_export.h"
 #include "ash/common/shell_observer.h"
 #include "ash/common/wm/window_state_observer.h"
 #include "ash/common/wm/wm_types.h"
 #include "ash/common/wm_activation_observer.h"
 #include "ash/common/wm_layout_manager.h"
-#include "ash/common/wm_root_window_controller_observer.h"
 #include "ash/common/wm_window_observer.h"
 #include "base/macros.h"
+#include "ui/display/display_observer.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 
 namespace ash {
 class WmShell;
 class WmRootWindowController;
 class WorkspaceLayoutManagerBackdropDelegate;
 
 namespace wm {
 class WMEvent;
 }
 
 // LayoutManager used on the window created for a workspace.
 class ASH_EXPORT WorkspaceLayoutManager
     : public WmLayoutManager,
       public WmWindowObserver,
       public WmActivationObserver,
       public keyboard::KeyboardControllerObserver,
-      public WmRootWindowControllerObserver,
+      public display::DisplayObserver,
       public ShellObserver,
       public wm::WindowStateObserver {
  public:
   // |window| is the container for this layout manager.
   explicit WorkspaceLayoutManager(WmWindow* window);
   ~WorkspaceLayoutManager() override;
 
   // A delegate which can be set to add a backdrop behind the top most visible
   // window. With the call the ownership of the delegate will be transferred to
   // the WorkspaceLayoutManager.
   void SetMaximizeBackdropDelegate(
       std::unique_ptr<WorkspaceLayoutManagerBackdropDelegate> delegate);
 
   // Overridden from WmLayoutManager:
   void OnWindowResized() override;
   void OnWindowAddedToLayout(WmWindow* child) override;
   void OnWillRemoveWindowFromLayout(WmWindow* child) override;
   void OnWindowRemovedFromLayout(WmWindow* child) override;
   void OnChildWindowVisibilityChanged(WmWindow* child, bool visibile) override;
   void SetChildBounds(WmWindow* child,
                       const gfx::Rect& requested_bounds) override;
 
-  // WmRootWindowControllerObserver overrides:
-  void OnWorkAreaChanged() override;
-
   // Overriden from WmWindowObserver:
   void OnWindowTreeChanged(
       WmWindow* window,
       const WmWindowObserver::TreeChangeParams& params) override;
   void OnWindowPropertyChanged(WmWindow* window,
                                WmWindowProperty property) override;
   void OnWindowStackingChanged(WmWindow* window) override;
   void OnWindowDestroying(WmWindow* window) override;
   void OnWindowBoundsChanged(WmWindow* window,
                              const gfx::Rect& old_bounds,
                              const gfx::Rect& new_bounds) override;
 
   // WmActivationObserver overrides:
   void OnWindowActivated(WmWindow* gained_active,
                          WmWindow* lost_active) override;
 
   // keyboard::KeyboardControllerObserver overrides:
   void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
 
   // WindowStateObserver overrides:
   void OnPostWindowStateTypeChange(wm::WindowState* window_state,
                                    wm::WindowStateType old_type) override;
 
+  // display::DisplayObserver overrides:
+  void OnDisplayMetricsChanged(const display::Display& display,
+                               uint32_t changed_metrics) override;
+
   // ShellObserver overrides:
   void OnFullscreenStateChanged(bool is_fullscreen,
                                 WmWindow* root_window) override;
   void OnPinnedStateChanged(WmWindow* pinned_window) override;
 
  private:
   typedef std::set<WmWindow*> WindowSet;
 
   // Adjusts the bounds of all managed windows when the display area changes.
   // This happens when the display size, work area insets has changed.
@@ skipping 32 matching lines @@
   // A window which covers the full container and which gets inserted behind the
   // topmost visible window.
   std::unique_ptr<WorkspaceLayoutManagerBackdropDelegate> backdrop_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_