Fix hung renderer dialog not showing after setting USE_ASH=0

chrome/browser/platform_util_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 "chrome/browser/platform_util.h"
 
 #include "base/logging.h"
 #include "ui/aura/window.h"
+#include "ui/wm/core/window_util.h"
 
 #if defined(USE_ASH)
 #include "ash/wm/window_util.h"
 #endif
 
 namespace platform_util {
 
 gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
   return view->GetToplevelWindow();
 }
 
 gfx::NativeView GetViewForWindow(gfx::NativeWindow window) {
   DCHECK(window);
   return window;
 }
 
 gfx::NativeView GetParent(gfx::NativeView view) {
   return view->parent();
 }
 
 bool IsWindowActive(gfx::NativeWindow window) {
 #if defined(USE_ASH)

[sky, 2016/02/18 22:15:54]

Can you use the non ash:: variants all the time? I believe both end up in the
same place and if we can it would be good to nuke the ifdefs (and the ash
include above).

[scottmg, 2016/02/18 22:20:14]

Done. (I didn't remove the ash::wm:: implementations entirely here because
there's a few other uses of them, and this will need to be merged back to 49.)

   return ash::wm::IsActiveWindow(window);
 #else
-  NOTIMPLEMENTED();
-  return false;
+  return wm::IsActiveWindow(window);
 #endif
 }
 
 void ActivateWindow(gfx::NativeWindow window) {
 #if defined(USE_ASH)
   ash::wm::ActivateWindow(window);
 #else
-  NOTIMPLEMENTED();
+  wm::ActivateWindow(window);
 #endif
 }
 
 bool IsVisible(gfx::NativeView view) {
   return view->IsVisible();
 }
 
 }  // namespace platform_util