Remove unused methods in SVGListPropertyHelper and SVGPropertyTearOff*

third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h

Index: third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h
diff --git a/third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h b/third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h
index 3119f2bd3e6c0d1004279a7300f416b14ecc6b07..a78c3f97064d423129797991f0e8b60744cf0174 100644
--- a/third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h
+++ b/third_party/WebKit/Source/core/svg/properties/SVGPropertyTearOff.h
@@ -69,8 +69,6 @@ class SVGPropertyTearOffBase
     attribute_name_ = attribute_name;
   }
 
-  virtual AnimatedPropertyType GetType() const = 0;
-
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 
   static void ThrowReadOnly(ExceptionState&);
@@ -106,10 +104,6 @@ class SVGPropertyTearOff : public SVGPropertyTearOffBase {
 
   void SetTarget(Property* target) { target_ = target; }
 
-  AnimatedPropertyType GetType() const override {
-    return Property::ClassType();
-  }
-
   DEFINE_INLINE_VIRTUAL_TRACE() {
     visitor->Trace(target_);
     SVGPropertyTearOffBase::Trace(visitor);