Raster display item lists via a visual rect RTree.

cc/playback/drawing_display_item.cc

 // Copyright 2014 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.
 
 #include "cc/playback/drawing_display_item.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 64 matching lines @@
     picture_->serialize(&stream,
                         image_serialization_processor->GetPixelSerializer());
     if (stream.bytesWritten() > 0) {
       SkAutoDataUnref data(stream.copyToData());
       details->set_picture(data->data(), data->size());
     }
   }
 }
 
 void DrawingDisplayItem::Raster(SkCanvas* canvas,
-                                const gfx::Rect& canvas_target_playback_rect,
                                 SkPicture::AbortCallback* callback) const {
-  // The canvas_playback_rect can be empty to signify no culling is desired.
-  if (!canvas_target_playback_rect.IsEmpty()) {
-    const SkMatrix& matrix = canvas->getTotalMatrix();
-    const SkRect& cull_rect = picture_->cullRect();
-    SkRect target_rect;
-    matrix.mapRect(&target_rect, cull_rect);
-    if (!target_rect.intersect(gfx::RectToSkRect(canvas_target_playback_rect)))
-      return;
-  }
-
   // SkPicture always does a wrapping save/restore on the canvas, so it is not
   // necessary here.
   if (callback)
     picture_->playback(canvas, callback);
   else
     canvas->drawPicture(picture_.get());
 }
 
 void DrawingDisplayItem::AsValueInto(
     const gfx::Rect& visual_rect,
@@ skipping 27 matching lines @@
 
 size_t DrawingDisplayItem::ExternalMemoryUsage() const {
   return SkPictureUtils::ApproximateBytesUsed(picture_.get());
 }
 
 int DrawingDisplayItem::ApproximateOpCount() const {
   return picture_->approximateOpCount();
 }
 
 }  // namespace cc