Make ScriptStreamer and dependents Oilpan friendly.

Source/core/inspector/InspectorInstrumentation.cpp

 /*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
@@ skipping 113 matching lines @@
     }
 }
 
 bool collectingHTMLParseErrorsImpl(InstrumentingAgents* instrumentingAgents)
 {
     if (InspectorInspectorAgent* inspectorAgent = instrumentingAgents->inspectorInspectorAgent())
         return inspectorAgent->hasFrontend();
     return false;
 }
 
-PassOwnPtr<ScriptSourceCode> preprocessImpl(InstrumentingAgents* instrumentingAgents, LocalFrame* frame, const ScriptSourceCode& sourceCode)
+ScriptSourceCode preprocessImpl(InstrumentingAgents* instrumentingAgents, LocalFrame* frame, const ScriptSourceCode& sourceCode)
 {
     if (InspectorDebuggerAgent* debuggerAgent = instrumentingAgents->inspectorDebuggerAgent())
         return debuggerAgent->preprocess(frame, sourceCode);
-    return PassOwnPtr<ScriptSourceCode>();
+    return ScriptSourceCode();
 }
 
 String preprocessEventListenerImpl(InstrumentingAgents* instrumentingAgents, LocalFrame* frame, const String& source, const String& url, const String& functionName)
 {
     if (InspectorDebuggerAgent* debuggerAgent = instrumentingAgents->inspectorDebuggerAgent())
         return debuggerAgent->preprocessEventListener(frame, source, url, functionName);
     return source;
 }
 
 void appendAsyncCallStack(ExecutionContext* executionContext, ScriptCallStack* callStack)
@@ skipping 113 matching lines @@
 
 InstrumentingAgents* instrumentationForWorkerGlobalScope(WorkerGlobalScope* workerGlobalScope)
 {
     if (WorkerInspectorController* controller = workerGlobalScope->workerInspectorController())
         return controller->m_instrumentingAgents.get();
     return 0;
 }
 
 } // namespace blink