Revert of Tracking 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
new file mode 100644
index 0000000000000000000000000000000000000000..fc90afe62b4c686aa57d8381f2e60ebe707cb6b8
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+++ b/third_party/WebKit/Source/core/layout/svg/ReferenceFilterBuilder.h
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+/*
+ * 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