Update the maximize button when size constraints change.

apps/ui/views/native_app_window_views.cc

 // 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.
 
 #include "apps/ui/views/native_app_window_views.h"
 
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 377 matching lines @@
 }
 
 gfx::Size NativeAppWindowViews::GetContentMaximumSize() const {
   return size_constraints_.GetMaximumSize();
 }
 
 void NativeAppWindowViews::SetContentSizeConstraints(
     const gfx::Size& min_size, const gfx::Size& max_size) {
   size_constraints_.set_minimum_size(min_size);
   size_constraints_.set_maximum_size(max_size);
+  widget_->OnSizeConstraintsChanged();
 }
 
 bool NativeAppWindowViews::CanHaveAlphaEnabled() const {
   return widget_->IsTranslucentWindowOpacitySupported();
 }
 
 void NativeAppWindowViews::SetVisibleOnAllWorkspaces(bool always_visible) {
   widget_->SetVisibleOnAllWorkspaces(always_visible);
 }
 
 }  // namespace apps