Add constructors for WebAudio events

third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp

Index: third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp b/third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp
index 951eea3035f9535a40e7e77e5be2ca0e536796e5..2742ffd8a3b92d479b38b1c8739b5e162c278085 100644
--- a/third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/OfflineAudioCompletionEvent.cpp
@@ -36,6 +36,12 @@ OfflineAudioCompletionEvent* OfflineAudioCompletionEvent::create(
   return new OfflineAudioCompletionEvent(renderedBuffer);
 }
 
+OfflineAudioCompletionEvent* OfflineAudioCompletionEvent::create(
+    const AtomicString& eventType,
+    const OfflineAudioCompletionEventInit& eventInit) {
+  return new OfflineAudioCompletionEvent(eventType, eventInit);
+}
+
 OfflineAudioCompletionEvent::OfflineAudioCompletionEvent() {}
 
 OfflineAudioCompletionEvent::OfflineAudioCompletionEvent(
@@ -43,6 +49,13 @@ OfflineAudioCompletionEvent::OfflineAudioCompletionEvent(
     : Event(EventTypeNames::complete, true, false),
       m_renderedBuffer(renderedBuffer) {}
 
+OfflineAudioCompletionEvent::OfflineAudioCompletionEvent(
+    const AtomicString& eventType,
+    const OfflineAudioCompletionEventInit& eventInit)
+    : Event(eventType, eventInit) {
+  m_renderedBuffer = eventInit.renderedBuffer();
+}
+
 OfflineAudioCompletionEvent::~OfflineAudioCompletionEvent() {}
 
 const AtomicString& OfflineAudioCompletionEvent::interfaceName() const {