Remove Widget::OnRootViewLayout().

ui/views/widget/root_view.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 UI_VIEWS_WIDGET_ROOT_VIEW_H_
 #define UI_VIEWS_WIDGET_ROOT_VIEW_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 87 matching lines @@
 
   // Overridden from ui::EventProcessor:
   ui::EventTarget* GetRootTarget() override;
   void OnEventProcessingStarted(ui::Event* event) override;
   void OnEventProcessingFinished(ui::Event* event) override;
 
   // Overridden from View:
   const Widget* GetWidget() const override;
   Widget* GetWidget() override;
   bool IsDrawn() const override;
-  void Layout() override;
   const char* GetClassName() const override;
   void SchedulePaintInRect(const gfx::Rect& rect) override;
   bool OnMousePressed(const ui::MouseEvent& event) override;
   bool OnMouseDragged(const ui::MouseEvent& event) override;
   void OnMouseReleased(const ui::MouseEvent& event) override;
   void OnMouseCaptureLost() override;
   void OnMouseMoved(const ui::MouseEvent& event) override;
   void OnMouseExited(const ui::MouseEvent& event) override;
   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
   void SetMouseHandler(View* new_mouse_handler) override;
@@ skipping 114 matching lines @@
   // Tracks drag state for a view.
   View::DragInfo drag_info_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RootView);
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_ROOT_VIEW_H_