Merge 108134

Source/WebCore/svg/animation/SVGSMILElement.h

Index: Source/WebCore/svg/animation/SVGSMILElement.h
===================================================================
--- Source/WebCore/svg/animation/SVGSMILElement.h	(revision 109359)
+++ Source/WebCore/svg/animation/SVGSMILElement.h	(working copy)
@@ -54,7 +54,7 @@
     SMILTimeContainer* timeContainer() const { return m_timeContainer.get(); }
 
     SVGElement* targetElement();
-    void resetTargetElement() { m_targetElement = 0; }
+    void resetTargetElement();
     const QualifiedName& attributeName() const { return m_attributeName; }
 
     void beginByLinkActivation();
@@ -114,6 +114,9 @@
 
     void setInactive() { m_activeState = Inactive; }
 
+    // Sub-classes may need to take action when the target is changed.
+    virtual void targetElementDidChange(SVGElement*) { }
+
 private:
     virtual void startedActiveInterval() = 0;
     virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) = 0;
@@ -230,4 +233,3 @@
 
 #endif // ENABLE(SVG)
 #endif // SVGSMILElement_h
-