Remove parts of //cc we aren't using

cc/debug/debug_rect_history.h

-// Copyright 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 CC_DEBUG_DEBUG_RECT_HISTORY_H_
-#define CC_DEBUG_DEBUG_RECT_HISTORY_H_
-
-#include <vector>
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "cc/layers/layer_lists.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace cc {
-
-class LayerImpl;
-class LayerTreeDebugState;
-
-// There are currently six types of debug rects:
-//
-// - Paint rects (update rects): regions of a layer that needed to be
-// re-uploaded to the texture resource; in most cases implying that they had to
-// be repainted, too.
-//
-// - Property-changed rects: enclosing bounds of layers that cause changes to
-// the screen even if the layer did not change internally. (For example, if the
-// layer's opacity or position changes.)
-//
-// - Surface damage rects: the aggregate damage on a target surface that is
-// caused by all layers and surfaces that contribute to it. This includes (1)
-// paint rects, (2) property- changed rects, and (3) newly exposed areas.
-//
-// - Screen space rects: this is the region the contents occupy in screen space.
-//
-// - Replica screen space rects: this is the region the replica's contents
-// occupy in screen space.
-enum DebugRectType {
-  PAINT_RECT_TYPE,
-  PROPERTY_CHANGED_RECT_TYPE,
-  SURFACE_DAMAGE_RECT_TYPE,
-  SCREEN_SPACE_RECT_TYPE,
-  REPLICA_SCREEN_SPACE_RECT_TYPE,
-  TOUCH_EVENT_HANDLER_RECT_TYPE,
-  WHEEL_EVENT_HANDLER_RECT_TYPE,
-  SCROLL_EVENT_HANDLER_RECT_TYPE,
-  NON_FAST_SCROLLABLE_RECT_TYPE,
-  ANIMATION_BOUNDS_RECT_TYPE,
-};
-
-struct DebugRect {
-  DebugRect(DebugRectType new_type, const gfx::Rect& new_rect)
-      : type(new_type), rect(new_rect) {}
-
-  DebugRectType type;
-  gfx::Rect rect;
-};
-
-// This class maintains a history of rects of various types that can be used
-// for debugging purposes. The overhead of collecting rects is performed only if
-// the appropriate LayerTreeSettings are enabled.
-class DebugRectHistory {
- public:
-  static scoped_ptr<DebugRectHistory> Create();
-
-  ~DebugRectHistory();
-
-  // Note: Saving debug rects must happen before layers' change tracking is
-  // reset.
-  void SaveDebugRectsForCurrentFrame(
-      LayerImpl* root_layer,
-      LayerImpl* hud_layer,
-      const LayerImplList& render_surface_layer_list,
-      const LayerTreeDebugState& debug_state);
-
-  const std::vector<DebugRect>& debug_rects() { return debug_rects_; }
-
- private:
-  DebugRectHistory();
-
-  void SavePaintRects(LayerImpl* layer);
-  void SavePropertyChangedRects(const LayerImplList& render_surface_layer_list,
-                                LayerImpl* hud_layer);
-  void SaveSurfaceDamageRects(
-      const LayerImplList& render_surface_layer_list);
-  void SaveScreenSpaceRects(
-      const LayerImplList& render_surface_layer_list);
-  void SaveTouchEventHandlerRects(LayerImpl* layer);
-  void SaveTouchEventHandlerRectsCallback(LayerImpl* layer);
-  void SaveWheelEventHandlerRects(LayerImpl* layer);
-  void SaveWheelEventHandlerRectsCallback(LayerImpl* layer);
-  void SaveScrollEventHandlerRects(LayerImpl* layer);
-  void SaveScrollEventHandlerRectsCallback(LayerImpl* layer);
-  void SaveNonFastScrollableRects(LayerImpl* layer);
-  void SaveNonFastScrollableRectsCallback(LayerImpl* layer);
-  void SaveLayerAnimationBoundsRects(
-      const LayerImplList& render_surface_layer_list);
-
-  std::vector<DebugRect> debug_rects_;
-
-  DISALLOW_COPY_AND_ASSIGN(DebugRectHistory);
-};
-
-}  // namespace cc
-
-#endif  // CC_DEBUG_DEBUG_RECT_HISTORY_H_