Revert of Add task location information to WorkerThread

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 69d26a5b8871f1dc5d0e94ae47a0381e0592f315..566ce066c9b35978c3e8b5e30190d1bd9c522989 100644
--- a/Source/core/workers/WorkerThread.cpp
+++ b/Source/core/workers/WorkerThread.cpp
@@ -170,7 +170,7 @@
         // Now queue the task as a cancellable one.
         OwnPtr<WorkerThreadCancelableTask> task = WorkerThreadCancelableTask::create(bind(&WorkerSharedTimer::OnTimeout, this));
         m_lastQueuedTask = task->createWeakPtr();
-        m_workerThread->postDelayedTask(FROM_HERE, task.release(), delay);
+        m_workerThread->postDelayedTask(task.release(), delay);
     }
 
     virtual void stop()
@@ -352,7 +352,7 @@
 
     postInitialize();
 
-    postDelayedTask(FROM_HERE, createSameThreadTask(&WorkerThread::idleHandler, this), kShortIdleHandlerDelayMs);
+    postDelayedTask(createSameThreadTask(&WorkerThread::idleHandler, this), kShortIdleHandlerDelayMs);
 }
 
 void WorkerThread::cleanup()
@@ -423,7 +423,7 @@
 
         // Stick a shutdown command at the end of the queue, so that we deal
         // with all the cleanup tasks the databases post first.
-        workerGlobalScope->postTask(FROM_HERE, WorkerThreadShutdownFinishTask::create());
+        workerGlobalScope->postTask(WorkerThreadShutdownFinishTask::create());
     }
 
     virtual bool isCleanupTask() const { return true; }
@@ -474,7 +474,7 @@
     m_workerGlobalScope->script()->scheduleExecutionTermination();
     InspectorInstrumentation::didKillAllExecutionContextTasks(m_workerGlobalScope.get());
     m_debuggerMessageQueue.kill();
-    postTask(FROM_HERE, WorkerThreadShutdownStartTask::create());
+    postTask(WorkerThreadShutdownStartTask::create());
 }
 
 void WorkerThread::didStartRunLoop()
@@ -519,23 +519,23 @@
             delay = kShortIdleHandlerDelayMs;
     }
 
-    postDelayedTask(FROM_HERE, createSameThreadTask(&WorkerThread::idleHandler, this), delay);
-}
-
-void WorkerThread::postTask(const WebTraceLocation& location, PassOwnPtr<ExecutionContextTask> task)
-{
-    m_thread->postTask(location, WorkerThreadTask::create(*this, task, true).leakPtr());
-}
-
-void WorkerThread::postDelayedTask(const WebTraceLocation& location, PassOwnPtr<ExecutionContextTask> task, long long delayMs)
-{
-    m_thread->postDelayedTask(location, WorkerThreadTask::create(*this, task, true).leakPtr(), delayMs);
-}
-
-void WorkerThread::postDebuggerTask(const WebTraceLocation& location, PassOwnPtr<ExecutionContextTask> task)
+    postDelayedTask(createSameThreadTask(&WorkerThread::idleHandler, this), delay);
+}
+
+void WorkerThread::postTask(PassOwnPtr<ExecutionContextTask> task)
+{
+    m_thread->postTask(FROM_HERE, WorkerThreadTask::create(*this, task, true).leakPtr());
+}
+
+void WorkerThread::postDelayedTask(PassOwnPtr<ExecutionContextTask> task, long long delayMs)
+{
+    m_thread->postDelayedTask(FROM_HERE, WorkerThreadTask::create(*this, task, true).leakPtr(), delayMs);
+}
+
+void WorkerThread::postDebuggerTask(PassOwnPtr<ExecutionContextTask> task)
 {
     m_debuggerMessageQueue.append(WorkerThreadTask::create(*this, task, false));
-    postTask(location, RunDebuggerQueueTask::create(this));
+    postTask(RunDebuggerQueueTask::create(this));
 }
 
 MessageQueueWaitResult WorkerThread::runDebuggerTask(WaitMode waitMode)