Add support for 'href' (w/o XLink NS) for various SVG elements

third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp

Index: third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp b/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
index 2f4c6b338876ab592123f9a37c06fff7e66ad0e6..ecfbc709bf0ef80354af26eda7abbbc6d61acf89 100644
--- a/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp
@@ -239,7 +239,7 @@ void SVGSMILElement::buildPendingResource()
     }
 
     AtomicString id;
-    AtomicString href = getAttribute(XLinkNames::hrefAttr);
+    const AtomicString& href = SVGURIReference::legacyHrefString(*this);
     Element* target;
     if (href.isEmpty())
         target = parentNode() && parentNode()->isElementNode() ? toElement(parentNode()) : nullptr;
@@ -287,7 +287,13 @@ static inline QualifiedName constructQualifiedName(const SVGElement* svgElement,
     if (namespaceURI.isEmpty())
         return anyQName();
 
-    return QualifiedName(nullAtom, localName, namespaceURI);
+    QualifiedName resolvedAttrName(nullAtom, localName, namespaceURI);
+    // "Animation elements treat attributeName='xlink:href' as being an alias
+    //  for targetting the 'href' attribute."
+    // https://svgwg.org/svg2-draft/types.html#__svg__SVGURIReference__href
+    if (resolvedAttrName == XLinkNames::hrefAttr)
+        return SVGNames::hrefAttr;
+    return resolvedAttrName;
 }
 
 static inline void clearTimesWithDynamicOrigins(Vector<SMILTimeWithOrigin>& timeList)
@@ -544,19 +550,20 @@ void SVGSMILElement::parseAttribute(const QualifiedName& name, const AtomicStrin
 
 void SVGSMILElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (attrName == SVGNames::durAttr)
+    if (attrName == SVGNames::durAttr) {
         m_cachedDur = invalidCachedTime;
-    else if (attrName == SVGNames::repeatDurAttr)
+    } else if (attrName == SVGNames::repeatDurAttr) {
         m_cachedRepeatDur = invalidCachedTime;
-    else if (attrName == SVGNames::repeatCountAttr)
+    } else if (attrName == SVGNames::repeatCountAttr) {
         m_cachedRepeatCount = invalidCachedTime;
-    else if (attrName == SVGNames::minAttr)
+    } else if (attrName == SVGNames::minAttr) {
         m_cachedMin = invalidCachedTime;
-    else if (attrName == SVGNames::maxAttr)
+    } else if (attrName == SVGNames::maxAttr) {
         m_cachedMax = invalidCachedTime;
-    else if (attrName == SVGNames::attributeNameAttr)
+    } else if (attrName == SVGNames::attributeNameAttr) {
         setAttributeName(constructQualifiedName(this, fastGetAttribute(SVGNames::attributeNameAttr)));
-    else if (attrName.matches(XLinkNames::hrefAttr)) {
+    } else if (attrName.matches(SVGNames::hrefAttr) || attrName.matches(XLinkNames::hrefAttr)) {
+        // TODO(fs): Could be smarter here when 'href' is specified and 'xlink:href' is changed.
         SVGElement::InvalidationGuard invalidationGuard(this);
         buildPendingResource();
         if (m_targetElement)