Move wm/core to wm namespace.

ui/wm/core/window_util.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/wm/core/window_util.h"
 
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/compositor/layer.h"
@@ skipping 17 matching lines @@
       parent->Add(clone);
       // RecreateLayer() moves the existing children to the new layer. Create a
       // copy of those.
       CloneChildren(owner->layer(), clone);
     }
   }
 }
 
 }  // namespace
 
-namespace views {
-namespace corewm {
+namespace wm {
 
 void ActivateWindow(aura::Window* window) {
   DCHECK(window);
   DCHECK(window->GetRootWindow());
   aura::client::GetActivationClient(window->GetRootWindow())->ActivateWindow(
       window);
 }
 
 void DeactivateWindow(aura::Window* window) {
   DCHECK(window);
@@ skipping 70 matching lines @@
 
 bool HasTransientAncestor(const aura::Window* window,
                           const aura::Window* ancestor) {
   const aura::Window* transient_parent = GetTransientParent(window);
   if (transient_parent == ancestor)
     return true;
   return transient_parent ?
       HasTransientAncestor(transient_parent, ancestor) : false;
 }
 
-}  // namespace corewm
-}  // namespace views
+}  // namespace wm