Update the maximize button when size constraints change.

athena/main/athena_frame_view.h

 // Copyright 2014 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 ATHENA_COMMON_ATHENA_FRAME_VIEW_H_
 #define ATHENA_COMMON_ATHENA_FRAME_VIEW_H_
 
 #include "ui/views/window/non_client_view.h"
 
 namespace views {
@@ skipping 15 matching lines @@
   // views::NonClientFrameView overrides:
   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 {}
 
   // views::View overrides:
   virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
   virtual void Layout() OVERRIDE {}
 
  private:
   gfx::Insets NonClientBorderInsets() const;
 
   virtual int NonClientTopBorderHeight() const;
   virtual int NonClientBorderThickness() const;
 
   // Not owned.
   views::Widget* frame_;
 
   DISALLOW_COPY_AND_ASSIGN(AthenaFrameView);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_COMMON_ATHENA_FRAME_VIEW_H_