Move SVGAnimateElement::findElementInstances to SVGElement.cpp

third_party/WebKit/Source/core/svg/SVGAnimateElement.h

Index: third_party/WebKit/Source/core/svg/SVGAnimateElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGAnimateElement.h b/third_party/WebKit/Source/core/svg/SVGAnimateElement.h
index 5c6b66cff15489f759b51dd339ac51a483872f84..98e90e2026bc0c78d2dd2bd61506df960a4c4493 100644
--- a/third_party/WebKit/Source/core/svg/SVGAnimateElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGAnimateElement.h
@@ -32,9 +32,6 @@
 
 namespace blink {
 
-// The size of SVGElementInstances is 1 unless there is a <use> instance of the element.
-using SVGElementInstances = HeapVector<Member<SVGElement>, 1u>;
-
 class CORE_EXPORT SVGAnimateElement : public SVGAnimationElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
@@ -48,8 +45,6 @@ public:
     AnimatedPropertyType animatedPropertyType();
     bool animatedPropertyTypeSupportsAddition();
 
-    static SVGElementInstances findElementInstances(SVGElement* targetElement);
-
 protected:
     SVGAnimateElement(const QualifiedName&, Document&);