Add SpeechSynthesisUtterance attribute on SpeechSynthesisEvent

Source/modules/speech/SpeechSynthesisEvent.cpp

Index: Source/modules/speech/SpeechSynthesisEvent.cpp
diff --git a/Source/modules/speech/SpeechSynthesisEvent.cpp b/Source/modules/speech/SpeechSynthesisEvent.cpp
index 05ee1d1bdc8e91e4fe59fb293cdb541df92c48f0..651932f1293d10d76815d590a4f1073af74def88 100644
--- a/Source/modules/speech/SpeechSynthesisEvent.cpp
+++ b/Source/modules/speech/SpeechSynthesisEvent.cpp
@@ -33,21 +33,28 @@ PassRefPtrWillBeRawPtr<SpeechSynthesisEvent> SpeechSynthesisEvent::create()
     return adoptRefWillBeNoop(new SpeechSynthesisEvent);
 }
 
-PassRefPtrWillBeRawPtr<SpeechSynthesisEvent> SpeechSynthesisEvent::create(const AtomicString& type, unsigned charIndex, float elapsedTime, const String& name)
+PassRefPtrWillBeRawPtr<SpeechSynthesisEvent> SpeechSynthesisEvent::create(const AtomicString& type, SpeechSynthesisUtterance* utterance, unsigned charIndex, float elapsedTime, const String& name)
 {
-    return adoptRefWillBeNoop(new SpeechSynthesisEvent(type, charIndex, elapsedTime, name));
+    return adoptRefWillBeNoop(new SpeechSynthesisEvent(type, utterance, charIndex, elapsedTime, name));
 }
 
 SpeechSynthesisEvent::SpeechSynthesisEvent()
 {
 }
 
-SpeechSynthesisEvent::SpeechSynthesisEvent(const AtomicString& type, unsigned charIndex, float elapsedTime, const String& name)
+SpeechSynthesisEvent::SpeechSynthesisEvent(const AtomicString& type, SpeechSynthesisUtterance* utterance, unsigned charIndex, float elapsedTime, const String& name)
     : Event(type, false, false)
+    , m_utterance(utterance)
     , m_charIndex(charIndex)
     , m_elapsedTime(elapsedTime)
     , m_name(name)
 {
 }
 
+DEFINE_TRACE(SpeechSynthesisEvent)
+{
+    visitor->trace(m_utterance);
+    Event::trace(visitor);
+}
+
 } // namespace blink