Update the maximize button when size constraints change.

chrome/browser/ui/views/panels/panel_frame_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 CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_FRAME_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_FRAME_VIEW_H_
 
 #include "chrome/browser/ui/panels/panel_constants.h"
 #include "chrome/browser/ui/views/tab_icon_view_model.h"
 #include "ui/views/controls/button/button.h"
@@ skipping 47 matching lines @@
   // Overridden from views::NonClientFrameView:
   virtual gfx::Rect GetBoundsForClientView() const OVERRIDE;
   virtual gfx::Rect GetWindowBoundsForClientBounds(
       const gfx::Rect& client_bounds) const OVERRIDE;
   virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE;
   virtual void GetWindowMask(const gfx::Size& size,
                              gfx::Path* window_mask) OVERRIDE;
   virtual void ResetWindowControls() OVERRIDE;
   virtual void UpdateWindowIcon() OVERRIDE;
   virtual void UpdateWindowTitle() OVERRIDE;
+  virtual void SizeConstraintsChanged() OVERRIDE;
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
   virtual gfx::Size GetMinimumSize() const OVERRIDE;
   virtual gfx::Size GetMaximumSize() const OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
@@ skipping 33 matching lines @@
   views::ImageButton* minimize_button_;
   views::ImageButton* restore_button_;
   TabIconView* title_icon_;
   views::Label* title_label_;
   panel::CornerStyle corner_style_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelFrameView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_FRAME_VIEW_H_