Move some more WM functionality down into ash.

ash/wm/workspace/workspace_observer.h

 // Copyright (c) 2011 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.
 
-#ifndef UI_AURA_SHELL_WORKSPACE_WORKSPACE_OBSERVER_H_
-#define UI_AURA_SHELL_WORKSPACE_WORKSPACE_OBSERVER_H_
+#ifndef ASH_WM_WORKSPACE_WORKSPACE_OBSERVER_H_
+#define ASH_WM_WORKSPACE_WORKSPACE_OBSERVER_H_
 #pragma once
 
 #include "ui/aura_shell/aura_shell_export.h"
 
 namespace aura {
 class Window;
 }
 
 namespace aura_shell {
 namespace internal {
@@ skipping 13 matching lines @@
   // the old active workspace and can be NULL.
   virtual void ActiveWorkspaceChanged(WorkspaceManager* manager,
                                       Workspace* old) = 0;
  protected:
   virtual ~WorkspaceObserver() {}
 };
 
 }  // namespace internal
 }  // namespace aura_shell
 
-#endif  // UI_AURA_SHELL_WORKSPACE_WORKSPACE_OBSERVER_H_
+#endif  // ASH_WM_WORKSPACE_WORKSPACE_OBSERVER_H_