Revert of Add task location information to ExecutionContext

Source/modules/filesystem/LocalFileSystem.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 125 matching lines @@
         (*allowed)();
         return;
     }
     client()->requestFileSystemAccessAsync(context, PermissionCallbacks::create(allowed, denied));
 }
 
 void LocalFileSystem::fileSystemNotAvailable(
     PassRefPtrWillBeRawPtr<ExecutionContext> context,
     CallbackWrapper* callbacks)
 {
-    context->postTask(FROM_HERE, createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
+    context->postTask(createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
 }
 
 void LocalFileSystem::fileSystemNotAllowedInternal(
     PassRefPtrWillBeRawPtr<ExecutionContext> context,
     CallbackWrapper* callbacks)
 {
-    context->postTask(FROM_HERE, createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
+    context->postTask(createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
 }
 
 void LocalFileSystem::fileSystemAllowedInternal(
     PassRefPtrWillBeRawPtr<ExecutionContext> context,
     FileSystemType type,
     CallbackWrapper* callbacks)
 {
     if (!fileSystem()) {
         fileSystemNotAvailable(context, callbacks);
         return;
@@ skipping 51 matching lines @@
 {
     frame.provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 }
 
 void provideLocalFileSystemToWorker(WorkerClients* clients, PassOwnPtr<FileSystemClient> client)
 {
     clients->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 }
 
 } // namespace blink