SVG animate should respect attribute 'restart=never'.

Source/core/svg/animation/SVGSMILElement.cpp

Index: Source/core/svg/animation/SVGSMILElement.cpp
diff --git a/Source/core/svg/animation/SVGSMILElement.cpp b/Source/core/svg/animation/SVGSMILElement.cpp
index 719cd493840b94a7801b10273ec43467b5cb4cea..e76a8249361fdb057e6ec28285e5814b038d1e35 100644
--- a/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/Source/core/svg/animation/SVGSMILElement.cpp
@@ -943,9 +943,9 @@ SMILTime SVGSMILElement::nextProgressTime() const
 
 void SVGSMILElement::beginListChanged(SMILTime eventTime)
 {
-    if (m_isWaitingForFirstInterval)
+    if (m_isWaitingForFirstInterval) {
         resolveFirstInterval();
-    else {
+    } else if (this->restart() != RestartNever) {

[fs, 2015/05/08 10:28:31]

I still think this should be checked later, but I'll accept this as-is given the
state of things.

         SMILTime newBegin = findInstanceTime(Begin, eventTime, true);
         if (newBegin.isFinite() && (m_interval.end <= eventTime || newBegin < m_interval.begin)) {
             // Begin time changed, re-resolve the interval.