Remove Widget::OnRootViewLayout().

ui/views/widget/native_widget_private.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_NATIVE_WIDGET_PRIVATE_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_PRIVATE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 206 matching lines @@
       const gfx::Vector2d& drag_offset,
       Widget::MoveLoopSource source,
       Widget::MoveLoopEscapeBehavior escape_behavior) = 0;
   virtual void EndMoveLoop() = 0;
   virtual void SetVisibilityChangedAnimationsEnabled(bool value) = 0;
   virtual void SetVisibilityAnimationDuration(
       const base::TimeDelta& duration) = 0;
   virtual void SetVisibilityAnimationTransition(
       Widget::VisibilityTransition transition) = 0;
   virtual ui::NativeTheme* GetNativeTheme() const = 0;
-  virtual void OnRootViewLayout() = 0;
   virtual bool IsTranslucentWindowOpacitySupported() const = 0;
   virtual void OnSizeConstraintsChanged() = 0;
 
   // Repost an unhandled event to the native widget for default OS processing.
   virtual void RepostNativeEvent(gfx::NativeEvent native_event) = 0;
 
   // Returns an internal name that matches the name of the associated Widget.
   virtual std::string GetName() const = 0;
 
   // Overridden from NativeWidget:
   internal::NativeWidgetPrivate* AsNativeWidgetPrivate() override;
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_PRIVATE_H_