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 <string>
 
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event_argument.h"
@@ skipping 51 matching lines @@
     SkMemoryStream stream(details.picture().data(), details.picture().size());
 
     // TODO(dtrainor, nyquist): Add an image decoder.
     picture = skia::AdoptRef(SkPicture::CreateFromStream(&stream, nullptr));
   }
 
   SetNew(std::move(picture));
 }
 
 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 19 matching lines @@
   PictureDebugUtil::SerializeAsBase64(picture_.get(), &b64_picture);
   array->SetString("skp64", b64_picture);
   array->EndDictionary();
 }
 
 void DrawingDisplayItem::CloneTo(DrawingDisplayItem* item) const {
   item->SetNew(picture_);
 }
 
 }  // namespace cc