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

cc/debug/overdraw_metrics.h

Index: cc/debug/overdraw_metrics.h
diff --git a/cc/debug/overdraw_metrics.h b/cc/debug/overdraw_metrics.h
deleted file mode 100644
index c53b2aa3cffb82f8500566f6b4befd852eaa0e26..0000000000000000000000000000000000000000
--- a/cc/debug/overdraw_metrics.h
+++ /dev/null
@@ -1,115 +0,0 @@
-// 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_OVERDRAW_METRICS_H_
-#define CC_DEBUG_OVERDRAW_METRICS_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace gfx {
-class Rect;
-class Transform;
-}
-
-namespace cc {
-class LayerTreeHost;
-class LayerTreeHostImpl;
-
-class OverdrawMetrics {
- public:
-  static scoped_ptr<OverdrawMetrics> Create(bool record_metrics_for_frame) {
-    return make_scoped_ptr(new OverdrawMetrics(record_metrics_for_frame));
-  }
-
-  // These methods are used for saving metrics during update/commit.
-
-  // Record pixels painted by WebKit into the texture updater, but does not mean
-  // the pixels were rasterized in main memory.
-  void DidPaint(const gfx::Rect& painted_rect);
-  // Records that an invalid tile was culled and did not need to be
-  // painted/uploaded, and did not contribute to other tiles needing to be
-  // painted.
-  void DidCullTilesForUpload(int count);
-  // Records pixels that were uploaded to texture memory.
-  void DidUpload(const gfx::Transform& transform_to_target,
-                 const gfx::Rect& upload_rect,
-                 const gfx::Rect& opaque_rect);
-  // Record contents texture(s) behind present using the given number of bytes.
-  void DidUseContentsTextureMemoryBytes(size_t contents_texture_use_bytes);
-  // Record RenderSurfaceImpl texture(s) being present using the given number of
-  // bytes.
-  void DidUseRenderSurfaceTextureMemoryBytes(size_t render_surface_use_bytes);
-
-  // These methods are used for saving metrics during draw.
-
-  // Record pixels that were not drawn to screen.
-  void DidCullForDrawing(const gfx::Transform& transform_to_target,
-                         const gfx::Rect& before_cull_rect,
-                         const gfx::Rect& after_cull_rect);
-  // Record pixels that were drawn to screen.
-  void DidDraw(const gfx::Transform& transform_to_target,
-               const gfx::Rect& after_cull_rect,
-               const gfx::Rect& opaque_rect);
-
-  void RecordMetrics(const LayerTreeHost* layer_tree_host) const;
-  void RecordMetrics(const LayerTreeHostImpl* layer_tree_host_impl) const;
-
-  // Accessors for tests.
-  float pixels_drawn_opaque() const { return pixels_drawn_opaque_; }
-  float pixels_drawn_translucent() const { return pixels_drawn_translucent_; }
-  float pixels_culled_for_drawing() const { return pixels_culled_for_drawing_; }
-  float pixels_painted() const { return pixels_painted_; }
-  float pixels_uploaded_opaque() const { return pixels_uploaded_opaque_; }
-  float pixels_uploaded_translucent() const {
-    return pixels_uploaded_translucent_;
-  }
-  int tiles_culled_for_upload() const { return tiles_culled_for_upload_; }
-
- private:
-  enum MetricsType {
-    UpdateAndCommit,
-    DrawingToScreen
-  };
-
-  explicit OverdrawMetrics(bool record_metrics_for_frame);
-
-  template <typename LayerTreeHostType>
-  void RecordMetricsInternal(MetricsType metrics_type,
-                             const LayerTreeHostType* layer_tree_host) const;
-
-  // When false this class is a giant no-op.
-  bool record_metrics_for_frame_;
-
-  // These values are used for saving metrics during update/commit.
-
-  // Count of pixels that were painted due to invalidation.
-  float pixels_painted_;
-  // Count of pixels uploaded to textures and known to be opaque.
-  float pixels_uploaded_opaque_;
-  // Count of pixels uploaded to textures and not known to be opaque.
-  float pixels_uploaded_translucent_;
-  // Count of tiles that were invalidated but not uploaded.
-  int tiles_culled_for_upload_;
-  // Count the number of bytes in contents textures.
-  uint64 contents_texture_use_bytes_;
-  // Count the number of bytes in RenderSurfaceImpl textures.
-  uint64 render_surface_texture_use_bytes_;
-
-  // These values are used for saving metrics during draw.
-
-  // Count of pixels that are opaque (and thus occlude). Ideally this is no more
-  // than wiewport width x height.
-  float pixels_drawn_opaque_;
-  // Count of pixels that are possibly translucent, and cannot occlude.
-  float pixels_drawn_translucent_;
-  // Count of pixels not drawn as they are occluded by somthing opaque.
-  float pixels_culled_for_drawing_;
-
-  DISALLOW_COPY_AND_ASSIGN(OverdrawMetrics);
-};
-
-}  // namespace cc
-
-#endif  // CC_DEBUG_OVERDRAW_METRICS_H_