ui: Move compositor/ directory out of gfx/, up to ui/.

ui/compositor/debug_utils.h

 // 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.
 
-#ifndef UI_GFX_COMPOSITOR_DEBUG_UTILS_H_
-#define UI_GFX_COMPOSITOR_DEBUG_UTILS_H_
+#ifndef UI_COMPOSITOR_DEBUG_UTILS_H_
+#define UI_COMPOSITOR_DEBUG_UTILS_H_
 #pragma once
 
 #ifndef NDEBUG
 
-#include "ui/gfx/compositor/compositor_export.h"
+#include "ui/compositor/compositor_export.h"
 
 namespace gfx {
 class Point;
 }
 
 namespace ui {
 
 class Layer;
 
 // Log the layer hierarchy. Mark layers which contain |mouse_location| with '*'.
 COMPOSITOR_EXPORT void PrintLayerHierarchy(const Layer* layer,
                                            gfx::Point mouse_location);
 
 } // namespace ui
 
 #endif // NDEBUG
 
-#endif  // UI_GFX_COMPOSITOR_DEBUG_UTILS_H_
+#endif  // UI_COMPOSITOR_DEBUG_UTILS_H_