Oilpan: Move CachedMetadataHandler to Oilpan heap on Oilpan-enabled world.

Source/modules/serviceworkers/ServiceWorkerScriptCachedMetadataHandler.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 "modules/serviceworkers/ServiceWorkerScriptCachedMetadataHandler.h"
 
 #include "core/fetch/CachedMetadata.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "modules/serviceworkers/ServiceWorkerGlobalScopeClient.h"
 
 namespace blink {
 
 ServiceWorkerScriptCachedMetadataHandler::ServiceWorkerScriptCachedMetadataHandler(WorkerGlobalScope* workerGlobalScope, const KURL& scriptURL, const Vector<char>* metaData)
     : m_workerGlobalScope(workerGlobalScope)
     , m_scriptURL(scriptURL)
 {
     if (metaData)
         m_cachedMetadata = CachedMetadata::deserialize(metaData->data(), metaData->size());
 }
 
 ServiceWorkerScriptCachedMetadataHandler::~ServiceWorkerScriptCachedMetadataHandler()
 {
 }
 
+DEFINE_TRACE(ServiceWorkerScriptCachedMetadataHandler)
+{
+#if ENABLE(OILPAN)
+    visitor->trace(m_workerGlobalScope);
+#endif
+    CachedMetadataHandler::trace(visitor);
+}
+
 void ServiceWorkerScriptCachedMetadataHandler::setCachedMetadata(unsigned dataTypeID, const char* data, size_t size, CacheType type)
 {
     if (type != SendToPlatform)
         return;
     m_cachedMetadata = CachedMetadata::create(dataTypeID, data, size);
     const Vector<char>& serializedData = m_cachedMetadata->serialize();
     ServiceWorkerGlobalScopeClient::from(m_workerGlobalScope)->setCachedMetadata(m_scriptURL, serializedData.data(), serializedData.size());
 }
 
 void ServiceWorkerScriptCachedMetadataHandler::clearCachedMetadata(CacheType type)
@@ skipping 10 matching lines @@
         return nullptr;
     return m_cachedMetadata.get();
 }
 
 String ServiceWorkerScriptCachedMetadataHandler::encoding() const
 {
     return emptyString();
 }
 
 } // namespace blink