Fix CSS reference filters with negative transformed children.

cc/blink/web_display_item_list_impl.h

 // 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.
 
 #ifndef CC_BLINK_WEB_DISPLAY_ITEM_LIST_IMPL_H_
 #define CC_BLINK_WEB_DISPLAY_ITEM_LIST_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/blink/cc_blink_export.h"
 #include "cc/playback/display_item_list.h"
 #include "third_party/WebKit/public/platform/WebDisplayItemList.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/gfx/geometry/point_f.h"
 
 class SkColorFilter;
 class SkImageFilter;
 class SkMatrix44;
 class SkPath;
 class SkPicture;
 class SkRRect;
 
 namespace blink {
 struct WebFloatRect;
+struct WebFloatPoint;
 struct WebRect;
 }
 
 namespace cc {
 class DisplayItemListSettings;
 class FilterOperations;
 }
 
 namespace cc_blink {
 
@@ skipping 18 matching lines @@
   void appendFloatClipItem(const blink::WebFloatRect& clip_rect) override;
   void appendEndFloatClipItem() override;
   void appendTransformItem(const SkMatrix44& matrix) override;
   void appendEndTransformItem() override;
   void appendCompositingItem(float opacity,
                              SkXfermode::Mode,
                              SkRect* bounds,
                              SkColorFilter*) override;
   void appendEndCompositingItem() override;
   void appendFilterItem(const cc::FilterOperations& filters,
-                        const blink::WebFloatRect& filter_bounds) override;
+                        const blink::WebFloatRect& filter_bounds,
+                        const blink::WebFloatPoint& origin) override;
   void appendEndFilterItem() override;
   void appendScrollItem(const blink::WebSize& scrollOffset,
                         ScrollContainerId) override;
   void appendEndScrollItem() override;
 
   void setIsSuitableForGpuRasterization(bool isSuitable) override;
 
  private:
   scoped_refptr<cc::DisplayItemList> display_item_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDisplayItemListImpl);
 };
 
 }  // namespace cc_blink
 
 #endif  // CC_BLINK_WEB_DISPLAY_ITEM_LIST_IMPL_H_