Oilpan: move Worker objects to the oilpan heap.

Source/core/workers/Worker.cpp

Index: Source/core/workers/Worker.cpp
diff --git a/Source/core/workers/Worker.cpp b/Source/core/workers/Worker.cpp
index e5c76ceee5e97e9c068fbeca9e1892668cac78d6..12442f1fa2c245a67a0163976b45d03a59cd376c 100644
--- a/Source/core/workers/Worker.cpp
+++ b/Source/core/workers/Worker.cpp
@@ -50,7 +50,7 @@ inline Worker::Worker(ExecutionContext* context)
     ScriptWrappable::init(this);
 }
 
-PassRefPtr<Worker> Worker::create(ExecutionContext* context, const String& url, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<Worker> Worker::create(ExecutionContext* context, const String& url, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
     Document* document = toDocument(context);
@@ -62,7 +62,7 @@ PassRefPtr<Worker> Worker::create(ExecutionContext* context, const String& url,
     WorkerGlobalScopeProxyProvider* proxyProvider = WorkerGlobalScopeProxyProvider::from(*document->page());
     ASSERT(proxyProvider);
 
-    RefPtr<Worker> worker = adoptRef(new Worker(context));
+    RefPtrWillBeRawPtr<Worker> worker = adoptRefWillBeRefCountedGarbageCollected(new Worker(context));
 
     worker->suspendIfNeeded();
 
@@ -103,7 +103,8 @@ void Worker::postMessage(PassRefPtr<SerializedScriptValue> message, const Messag
 
 void Worker::terminate()
 {
-    m_contextProxy->terminateWorkerGlobalScope();
+    if (m_contextProxy)

[sof, 2014/03/06 21:55:28]

cf.
https://codereview.chromium.org/177073004/diff/1/Source/core/workers/Worker.c...

+        m_contextProxy->terminateWorkerGlobalScope();
 }
 
 void Worker::stop()
@@ -137,4 +138,9 @@ void Worker::notifyFinished()
     unsetPendingActivity(this);
 }
 
+void Worker::trace(Visitor* visitor)
+{
+    AbstractWorker::trace(visitor);
+}
+
 } // namespace WebCore