Revert of Add task location information to ExecutionContext

Source/core/workers/WorkerMessagingProxy.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 148 matching lines @@
 
     ASSERT(m_workerThread);
     m_workerThread->postTask(task);
     return true;
 }
 
 void WorkerMessagingProxy::postTaskToLoader(PassOwnPtr<ExecutionContextTask> task)
 {
     // FIXME: In case of nested workers, this should go directly to the root Document context.
     ASSERT(m_executionContext->isDocument());
-    m_executionContext->postTask(FROM_HERE, task);
+    m_executionContext->postTask(task);
 }
 
 void WorkerMessagingProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, int exceptionId)
 {
     if (!m_workerObject)
         return;
 
     // We don't bother checking the askedToTerminate() flag here, because exceptions should *always* be reported even if the thread is terminated.
     // This is intentionally different than the behavior in MessageWorkerTask, because terminated workers no longer deliver messages (section 4.6 of the WebWorker spec), but they do report exceptions.
 
@@ skipping 29 matching lines @@
     m_workerThreadHadPendingActivity = true; // Worker initialization means a pending activity.
 
     for (auto& earlyTasks : m_queuedEarlyTasks)
         m_workerThread->postTask(earlyTasks.release());
     m_queuedEarlyTasks.clear();
 }
 
 void WorkerMessagingProxy::workerObjectDestroyed()
 {
     m_workerObject = nullptr;
-    m_executionContext->postTask(FROM_HERE, createCrossThreadTask(&workerObjectDestroyedInternal, AllowCrossThreadAccess(this)));
+    m_executionContext->postTask(createCrossThreadTask(&workerObjectDestroyedInternal, AllowCrossThreadAccess(this)));
 }
 
 void WorkerMessagingProxy::workerObjectDestroyedInternal(ExecutionContext*, WorkerMessagingProxy* proxy)
 {
     proxy->m_mayBeDestroyed = true;
     if (proxy->m_workerThread)
         proxy->terminateWorkerGlobalScope();
     else
         proxy->workerThreadTerminated();
 }
@@ skipping 69 matching lines @@
 
     // FIXME: This need to be revisited when we support nested worker one day
     ASSERT(m_executionContext->isDocument());
     Document* document = toDocument(m_executionContext.get());
     LocalFrame* frame = document->frame();
     if (frame)
         frame->console().adoptWorkerMessagesAfterTermination(this);
 }
 
 } // namespace blink