Move //components/ui/zoom to top-level under //components

components/zoom/zoom_event_manager_observer.h

 // Copyright 2015 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 COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_
-#define COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_
+#ifndef COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_
+#define COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_
 
-namespace ui_zoom {
+namespace zoom {
 
 class ZoomEventManagerObserver {
  public:
   // TODO(wjmaclean): convert existing ZoomLevelChangedCallbacks to be
   // observers.
   virtual void OnZoomLevelChanged() {}
   virtual void OnDefaultZoomLevelChanged() {}
 
  protected:
   virtual ~ZoomEventManagerObserver() {}
 };
 
-}  // namespace ui_zoom
+}  // namespace zoom
 
-#endif  // COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_
+#endif  // COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_