Oilpan: fix build after r194136.

Source/bindings/core/v8/RejectedPromises.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "bindings/core/v8/RejectedPromises.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
@@ skipping 46 matching lines @@
 
 RejectedPromises::RejectedPromises()
 {
 }
 
 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(RejectedPromises);
 
 DEFINE_TRACE(RejectedPromises)
 {
     visitor->trace(m_queue);
+    visitor->trace(m_reportedAsErrors);
 }
 
 void RejectedPromises::rejectedWithNoHandler(ScriptState* scriptState, v8::PromiseRejectMessage data, const String& errorMessage, const String& resourceName, int scriptId, int lineNumber, int columnNumber, PassRefPtrWillBeRawPtr<ScriptCallStack> callStack)
 {
     v8::Handle<v8::Promise> promise = data.GetPromise();
     OwnPtrWillBeRawPtr<Message> message = Message::create(ScriptValue(scriptState, promise), ScriptValue(scriptState, data.GetValue()), errorMessage, resourceName, scriptId, lineNumber, columnNumber, callStack);
 
     m_queue.append(message.release());
 }
 
@@ skipping 85 matching lines @@
         message->m_consoleMessageId = consoleMessage->assignMessageId();
         executionContext->addConsoleMessage(consoleMessage.release());
 
         m_reportedAsErrors.append(message.release());
         if (m_reportedAsErrors.size() > maxReportedHandlersPendingResolution)
             m_reportedAsErrors.removeFirst();
     }
 }
 
 } // namespace blink