Revert of Tracking filter mutation via SVGElementProxy

third_party/WebKit/Source/core/style/FilterOperations.cpp

Index: third_party/WebKit/Source/core/style/FilterOperations.cpp
diff --git a/third_party/WebKit/Source/core/style/FilterOperations.cpp b/third_party/WebKit/Source/core/style/FilterOperations.cpp
index 06d944ce4532a426d7e96301dcc1aafda8cbf40b..66e8fea6edfe19ebd91710a0cd93fadc7ca7dccb 100644
--- a/third_party/WebKit/Source/core/style/FilterOperations.cpp
+++ b/third_party/WebKit/Source/core/style/FilterOperations.cpp
@@ -25,6 +25,9 @@
 
 #include "core/style/FilterOperations.h"
 
+#include "platform/LengthFunctions.h"
+#include "platform/geometry/IntSize.h"
+#include "platform/graphics/filters/FEGaussianBlur.h"
 #include <numeric>
 
 namespace blink {
@@ -105,18 +108,4 @@
   return false;
 }
 
-void FilterOperations::addClient(SVGResourceClient* client) const {
-  for (FilterOperation* operation : m_operations) {
-    if (operation->type() == FilterOperation::REFERENCE)
-      toReferenceFilterOperation(*operation).addClient(client);
-  }
-}
-
-void FilterOperations::removeClient(SVGResourceClient* client) const {
-  for (FilterOperation* operation : m_operations) {
-    if (operation->type() == FilterOperation::REFERENCE)
-      toReferenceFilterOperation(*operation).removeClient(client);
-  }
-}
-
 }  // namespace blink