Fix the issue of app window frame header buttons not being repainted when its activation state chan…

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/aura/wm_window_aura.h"
@@ skipping 498 matching lines @@
 void CustomFrameViewAsh::UpdateWindowIcon() {}
 
 void CustomFrameViewAsh::UpdateWindowTitle() {
   header_view_->SchedulePaintForTitle();
 }
 
 void CustomFrameViewAsh::SizeConstraintsChanged() {
   header_view_->SizeConstraintsChanged();
 }
 
+void CustomFrameViewAsh::ActivationChanged(bool active) {
+  // The icons differ between active and inactive.
+  header_view_->SchedulePaint();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // CustomFrameViewAsh, views::View overrides:
 
 gfx::Size CustomFrameViewAsh::GetPreferredSize() const {
   gfx::Size pref = frame_->client_view()->GetPreferredSize();
   gfx::Rect bounds(0, 0, pref.width(), pref.height());
   return frame_->non_client_view()
       ->GetWindowBoundsForClientBounds(bounds)
       .size();
 }
@@ skipping 73 matching lines @@
 FrameCaptionButtonContainerView*
 CustomFrameViewAsh::GetFrameCaptionButtonContainerViewForTest() {
   return header_view_->caption_button_container();
 }
 
 int CustomFrameViewAsh::NonClientTopBorderHeight() const {
   return frame_->IsFullscreen() ? 0 : header_view_->GetPreferredHeight();
 }
 
 }  // namespace ash