Reland of "Tracking reference filter mutation via SVGElementProxy"

third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h

Index: third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h
diff --git a/third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h b/third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h
deleted file mode 100644
index fc90afe62b4c686aa57d8381f2e60ebe707cb6b8..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above
- *    copyright notice, this list of conditions and the following
- *    disclaimer.
- * 2. Redistributions in binary form must reproduce the above
- *    copyright notice, this list of conditions and the following
- *    disclaimer in the documentation and/or other materials
- *    provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef ReferenceFilterBuilder_h
-#define ReferenceFilterBuilder_h
-
-#include "core/fetch/DocumentResourceReference.h"
-#include "wtf/Allocator.h"
-
-namespace blink {
-
-class Element;
-class FilterOperation;
-class ReferenceFilterOperation;
-class SVGFilterElement;
-
-class ReferenceFilterBuilder {
-  STATIC_ONLY(ReferenceFilterBuilder);
-
- public:
-  static DocumentResourceReference* documentResourceReference(
-      const FilterOperation*);
-  static void setDocumentResourceReference(const FilterOperation*,
-                                           DocumentResourceReference*);
-
-  static SVGFilterElement* resolveFilterReference(
-      const ReferenceFilterOperation&,
-      Element&);
-};
-
-}  // namespace blink
-
-#endif  // ReferenceFilterBuilder_h