Oilpan: Prepare moving inspector script related classes to oilpan.

Source/core/inspector/TimelineRecordFactory.cpp

Index: Source/core/inspector/TimelineRecordFactory.cpp
diff --git a/Source/core/inspector/TimelineRecordFactory.cpp b/Source/core/inspector/TimelineRecordFactory.cpp
index 8d0090e076ef165be8744dfdf4a40bbb22cddabc..62145ca501d8ca62272bd52af8e0670426519e15 100644
--- a/Source/core/inspector/TimelineRecordFactory.cpp
+++ b/Source/core/inspector/TimelineRecordFactory.cpp
@@ -52,7 +52,7 @@ PassRefPtr<TimelineEvent> TimelineRecordFactory::createGenericRecord(double star
         .setData(data)
         .setStartTime(startTime);
     if (maxCallStackDepth) {
-        RefPtr<ScriptCallStack> stackTrace = createScriptCallStack(maxCallStackDepth, true);
+        RefPtrWillBeRawPtr<ScriptCallStack> stackTrace = createScriptCallStack(maxCallStackDepth, true);
         if (stackTrace && stackTrace->size())
             record->setStackTrace(stackTrace->buildInspectorArray());
     }