Update the maximize button when size constraints change.

ash/frame/custom_frame_view_ash.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 "ash/frame/custom_frame_view_ash.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 209 matching lines @@
 CustomFrameViewAsh::HeaderView::~HeaderView() {
   Shell::GetInstance()->RemoveShellObserver(this);
 }
 
 void CustomFrameViewAsh::HeaderView::SchedulePaintForTitle() {
   header_painter_->SchedulePaintForTitle();
 }
 
 void CustomFrameViewAsh::HeaderView::ResetWindowControls() {
   caption_button_container_->ResetWindowControls();
+  caption_button_container_->UpdateSizeButtonVisibility();
+
+  Layout();
 }
 
 int CustomFrameViewAsh::HeaderView::GetPreferredOnScreenHeight() const {
   if (frame_->IsFullscreen()) {
     return static_cast<int>(
         GetPreferredHeight() * fullscreen_visible_fraction_);
   }
   return GetPreferredHeight();
 }
 
@@ skipping 328 matching lines @@
 FrameCaptionButtonContainerView* CustomFrameViewAsh::
     GetFrameCaptionButtonContainerViewForTest() {
   return header_view_->caption_button_container();
 }
 
 int CustomFrameViewAsh::NonClientTopBorderHeight() const {
   return frame_->IsFullscreen() ? 0 : header_view_->GetPreferredHeight();
 }
 
 }  // namespace ash