chromeos: Move files in //ash/common to //ash, part 2

ash/mus/bridge/workspace_event_handler_mus.h

 // Copyright 2016 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 ASH_MUS_BRIDGE_WORKSPACE_EVENT_HANDLER_MUS_H_
 #define ASH_MUS_BRIDGE_WORKSPACE_EVENT_HANDLER_MUS_H_
 
-#include "ash/common/wm/workspace/workspace_event_handler.h"
+#include "ash/wm/workspace/workspace_event_handler.h"
 #include "base/macros.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ash {
 namespace mus {
 
 // TODO(sky): investigate if can use aura version.
@@ skipping 12 matching lines @@
  private:
   aura::Window* workspace_window_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandlerMus);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_BRIDGE_WORKSPACE_EVENT_HANDLER_MUS_H_