Fix regression where the active window header was not used for apps on CrOS

ui/views/widget/native_widget_aura.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 "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_client.h"
@@ skipping 860 matching lines @@
 void NativeWidgetAura::OnWindowActivated(aura::Window* gained_active,
                                          aura::Window* lost_active) {
   DCHECK(window_ == gained_active || window_ == lost_active);
   if (GetWidget()->GetFocusManager()) {
     if (window_ == gained_active)
       GetWidget()->GetFocusManager()->RestoreFocusedView();
     else if (window_ == lost_active)
       GetWidget()->GetFocusManager()->StoreFocusedView(true);
   }
   delegate_->OnNativeWidgetActivationChanged(window_ == gained_active);
-  if (IsVisible() && GetWidget()->non_client_view())
-    GetWidget()->non_client_view()->SchedulePaint();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeWidgetAura, aura::client::FocusChangeObserver:
 
 void NativeWidgetAura::OnWindowFocused(aura::Window* gained_focus,
                                        aura::Window* lost_focus) {
   if (window_ == gained_focus) {
     // In aura, it is possible for child native widgets to take input and focus,
     // this differs from the behavior on windows.
@@ skipping 250 matching lines @@
   return aura::Env::GetInstance()->IsMouseButtonDown();
 }
 
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   return aura::Env::GetInstance()->is_touch_down();
 }
 
 }  // namespace internal
 }  // namespace views