Call OnNativeWindowChanged after maximizing and restoring.

ui/views/widget/native_widget_delegate.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_DELEGATE_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_
 
 #include <vector>
 
 #include "ui/events/event_constants.h"
@@ skipping 71 matching lines @@
   // Returns the smallest size the window can be resized to by the user.
   virtual gfx::Size GetMinimumSize() const = 0;
 
   // Returns the largest size the window can be resized to by the user.
   virtual gfx::Size GetMaximumSize() const = 0;
 
   // Called when the NativeWidget changed position.
   virtual void OnNativeWidgetMove() = 0;
 
   // Called when the NativeWidget changed size to |new_size|.
+  // This may happen at the same time as OnNativeWidgetWindowShowStateChanged,
+  // e.g. maximize.
   virtual void OnNativeWidgetSizeChanged(const gfx::Size& new_size) = 0;
 
+  // Called when the NativeWidget changes its window state.
+  // This may happen at the same time as OnNativeWidgetSizeChanged, e.g.
+  // maximize.
+  virtual void OnNativeWidgetWindowShowStateChanged() = 0;
+
   // Called when the user begins/ends to change the bounds of the window.
   virtual void OnNativeWidgetBeginUserBoundsChange() = 0;
   virtual void OnNativeWidgetEndUserBoundsChange() = 0;
 
   // Returns true if the delegate has a FocusManager.
   virtual bool HasFocusManager() const = 0;
 
   // Paints the widget using acceleration. If the widget is not using
   // accelerated painting this returns false and does nothing.
   virtual bool OnNativeWidgetPaintAccelerated(
@@ skipping 42 matching lines @@
   // later.  Returns true if the initial focus has been set or the window should
   // not set the initial focus, or false if the caller should set the initial
   // focus (if any).
   virtual bool SetInitialFocus(ui::WindowShowState show_state) = 0;
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_