cc: Remove OverdrawMetrics and --trace-overdraw flag.

cc/trees/occlusion_tracker.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_TREES_OCCLUSION_TRACKER_H_
 #define CC_TREES_OCCLUSION_TRACKER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/region.h"
 #include "cc/layers/layer_iterator.h"
 #include "ui/gfx/rect.h"
 
 namespace cc {
-class OverdrawMetrics;
 class LayerImpl;
 class RenderSurfaceImpl;
 class Layer;
 class RenderSurface;
 
 // This class is used to track occlusion of layers while traversing them in a
 // front-to-back order. As each layer is visited, one of the methods in this
 // class is called to notify it about the current target surface. Then,
 // occlusion in the content space of the current layer may be queried, via
 // methods such as Occluded() and UnoccludedContentRect(). If the current layer
 // owns a RenderSurfaceImpl, then occlusion on that RenderSurfaceImpl may also
 // be queried via surfaceOccluded() and surfaceUnoccludedContentRect(). Finally,
 // once finished with the layer, occlusion behind the layer should be marked by
 // calling MarkOccludedBehindLayer().
 template <typename LayerType>
 class CC_EXPORT OcclusionTracker {
  public:
-  OcclusionTracker(const gfx::Rect& screen_space_clip_rect,
-                   bool record_metrics_for_frame);
+  explicit OcclusionTracker(const gfx::Rect& screen_space_clip_rect);
   ~OcclusionTracker();
 
   // Called at the beginning of each step in the LayerIterator's front-to-back
   // traversal.
   void EnterLayer(const LayerIteratorPosition<LayerType>& layer_iterator);
   // Called at the end of each step in the LayerIterator's front-to-back
   // traversal.
   void LeaveLayer(const LayerIteratorPosition<LayerType>& layer_iterator);
 
   // Returns true if the given rect in content space for a layer is fully
@@ skipping 13 matching lines @@
                                   const gfx::Transform& draw_transform) const;
 
   // Gives an unoccluded sub-rect of |content_rect| in the content space of the
   // render_target owned by the layer. Used when considering occlusion for a
   // contributing surface that is rendering into another target.
   gfx::Rect UnoccludedContributingSurfaceContentRect(
       const LayerType* layer,
       bool for_replica,
       const gfx::Rect& content_rect) const;
 
-  // Report operations for recording overdraw metrics.
-  OverdrawMetrics* overdraw_metrics() const {
-    return overdraw_metrics_.get();
-  }
-
   // Gives the region of the screen that is not occluded by something opaque.
   Region ComputeVisibleRegionInScreen() const {
     DCHECK(!stack_.back().target->parent());
     return SubtractRegions(screen_space_clip_rect_,
                            stack_.back().occlusion_from_inside_target);
   }
 
   void set_minimum_tracking_size(const gfx::Size& size) {
     minimum_tracking_size_ = size;
   }
@@ skipping 47 matching lines @@
   // Called when visiting a layer representing a contributing surface. This
   // indicates that we are leaving our current surface, and entering the new
   // one. We then perform any operations required for merging results from the
   // child subtree into its parent.
   void LeaveToRenderTarget(const LayerType* new_target);
 
   // Add the layer's occlusion to the tracked state.
   void MarkOccludedBehindLayer(const LayerType* layer);
 
   gfx::Rect screen_space_clip_rect_;
-  scoped_ptr<class OverdrawMetrics> overdraw_metrics_;
   gfx::Size minimum_tracking_size_;
 
   // This is used for visualizing the occlusion tracking process.
   std::vector<gfx::Rect>* occluding_screen_space_rects_;
   std::vector<gfx::Rect>* non_occluding_screen_space_rects_;
 
   DISALLOW_COPY_AND_ASSIGN(OcclusionTracker);
 };
 
 #if !defined(COMPILER_MSVC)
 extern template class OcclusionTracker<Layer>;
 extern template class OcclusionTracker<LayerImpl>;
 #endif
 
 }  // namespace cc
 
 #endif  // CC_TREES_OCCLUSION_TRACKER_H_