Remove String::adopt(Vector<UChar>)

Source/core/page/EventSource.cpp

Index: Source/core/page/EventSource.cpp
diff --git a/Source/core/page/EventSource.cpp b/Source/core/page/EventSource.cpp
index feb7ef34c4f621578414adffbae188b0330006c2..d410de90190b9d456ddfaf14d23fada49b5f1752 100644
--- a/Source/core/page/EventSource.cpp
+++ b/Source/core/page/EventSource.cpp
@@ -415,7 +415,8 @@ void EventSource::stop()
 PassRefPtr<MessageEvent> EventSource::createMessageEvent()
 {
     RefPtr<MessageEvent> event = MessageEvent::create();
-    event->initMessageEvent(m_eventName.isEmpty() ? eventNames().messageEvent : AtomicString(m_eventName), false, false, SerializedScriptValue::create(String::adopt(m_data)), m_eventStreamOrigin, m_lastEventId, 0, nullptr);
+    event->initMessageEvent(m_eventName.isEmpty() ? eventNames().messageEvent : AtomicString(m_eventName), false, false, SerializedScriptValue::create(String(m_data)), m_eventStreamOrigin, m_lastEventId, 0, nullptr);
+    m_data.clear();
     return event.release();
 }