Remove all uses of skia::RefPtr and stale includes

cc/blink/web_display_item_list_impl.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/blink/web_display_item_list_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
 
 #include "cc/playback/clip_display_item.h"
 #include "cc/playback/clip_path_display_item.h"
 #include "cc/playback/compositing_display_item.h"
 #include "cc/playback/display_item_list_settings.h"
 #include "cc/playback/drawing_display_item.h"
 #include "cc/playback/filter_display_item.h"
 #include "cc/playback/float_clip_display_item.h"
 #include "cc/playback/transform_display_item.h"
-#include "skia/ext/refptr.h"
 #include "third_party/WebKit/public/platform/WebFloatRect.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkMatrix44.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
 #include "ui/gfx/transform.h"
 
 namespace cc_blink {
 
@@ skipping 196 matching lines @@
 
 void WebDisplayItemListImpl::appendEndScrollItem(
     const blink::WebRect& visual_rect) {
   appendEndTransformItem(visual_rect);
 }
 
 WebDisplayItemListImpl::~WebDisplayItemListImpl() {
 }
 
 }  // namespace cc_blink