Update the maximize button when size constraints change.

ui/views/widget/widget_unittest.cc

 // 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.
 
 #include <algorithm>
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 3029 matching lines @@
     return gfx::Rect();
   }
   virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE {
     return HTNOWHERE;
   }
   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 void Layout() OVERRIDE {
     if (widget_->IsFullscreen())
       fullscreen_layout_called_ = true;
   }
 
   bool fullscreen_layout_called() const { return fullscreen_layout_called_; }
 
  private:
@@ skipping 133 matching lines @@
   EXPECT_EQ(3, view->GetEventCount(ui::ET_MOUSE_PRESSED));
   EXPECT_EQ(3, view->GetEventCount(ui::ET_MOUSE_RELEASED));
   EXPECT_EQ(1, view->GetEventCount(ui::ET_MOUSE_DRAGGED));
   EXPECT_EQ(ui::EF_LEFT_MOUSE_BUTTON, view->last_flags());
 
   widget->CloseNow();
 }
 
 }  // namespace test
 }  // namespace views