Revert of Add task location information to ExecutionContext

Source/web/WebSharedWorkerImpl.cpp

Index: Source/web/WebSharedWorkerImpl.cpp
diff --git a/Source/web/WebSharedWorkerImpl.cpp b/Source/web/WebSharedWorkerImpl.cpp
index cc0bdabcb755f9becb06ae81b6237a18da110845..8e1ec3c5e8804eb4db24177b9474ee7a340b06f1 100644
--- a/Source/web/WebSharedWorkerImpl.cpp
+++ b/Source/web/WebSharedWorkerImpl.cpp
@@ -300,7 +300,7 @@
 
 void WebSharedWorkerImpl::postMessageToPageInspector(const String& message)
 {
-    toWebLocalFrameImpl(m_mainFrame)->frame()->document()->postInspectorTask(FROM_HERE, createCrossThreadTask(&WebSharedWorkerImpl::postMessageToPageInspectorOnMainThread, this, message));
+    toWebLocalFrameImpl(m_mainFrame)->frame()->document()->postInspectorTask(createCrossThreadTask(&WebSharedWorkerImpl::postMessageToPageInspectorOnMainThread, this, message));
 }
 
 void WebSharedWorkerImpl::postMessageToPageInspectorOnMainThread(const String& message)
@@ -346,7 +346,7 @@
 
 void WebSharedWorkerImpl::postTaskToLoader(PassOwnPtr<ExecutionContextTask> task)
 {
-    toWebLocalFrameImpl(m_mainFrame)->frame()->document()->postTask(FROM_HERE, task);
+    toWebLocalFrameImpl(m_mainFrame)->frame()->document()->postTask(task);
 }
 
 bool WebSharedWorkerImpl::postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask> task)