Revert of Add task location information to ExecutionContext

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index cb1229cd3727d833e9c3fbe134f713f7bd881939..ff0c33ba2c3318e1e51427119b05c26a9899df3f 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -855,8 +855,8 @@
     void parseDNSPrefetchControlHeader(const String&);
 
     // FIXME(crbug.com/305497): This should be removed once LocalDOMWindow is an ExecutionContext.
-    virtual void postTask(const WebTraceLocation&, PassOwnPtr<ExecutionContextTask>) override; // Executes the task on context's thread asynchronously.
-    void postInspectorTask(const WebTraceLocation&, PassOwnPtr<ExecutionContextTask>);
+    virtual void postTask(PassOwnPtr<ExecutionContextTask>) override; // Executes the task on context's thread asynchronously.
+    void postInspectorTask(PassOwnPtr<ExecutionContextTask>);
 
     virtual void tasksWereSuspended() override final;
     virtual void tasksWereResumed() override final;