Revert of [Extension ServiceWorkers] Blink: Passing v8::context to extensions dispatcher

Source/core/workers/WorkerThread.cpp

Index: Source/core/workers/WorkerThread.cpp
diff --git a/Source/core/workers/WorkerThread.cpp b/Source/core/workers/WorkerThread.cpp
index 323c4d29014a7effe13214fcfb462190a9e16626..632fd6dc9a022ea1126060ffeb5c2263223e12d8 100644
--- a/Source/core/workers/WorkerThread.cpp
+++ b/Source/core/workers/WorkerThread.cpp
@@ -250,10 +250,6 @@
     }
     m_workerGlobalScope->workerInspectorController()->workerContextInitialized(startMode == PauseWorkerGlobalScopeOnStart);
 
-    if (m_workerGlobalScope->script()->scriptState()->contextIsValid()) {
-        m_workerReportingProxy.didInitializeWorkerContext();
-    }
-
     OwnPtrWillBeRawPtr<CachedMetadataHandler> handler(workerGlobalScope()->createWorkerScriptCachedMetadataHandler(scriptURL, cachedMetaData.get()));
     bool success = m_workerGlobalScope->script()->evaluate(ScriptSourceCode(sourceCode, scriptURL), nullptr, handler.get(), v8CacheOptions);
     m_workerGlobalScope->didEvaluateWorkerScript();