Cleanup FileSystemOperation for preparing for adding FSO-factory method

webkit/tools/test_shell/simple_file_writer.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/tools/test_shell/simple_file_writer.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "net/url_request/url_request_context.h"
@@ skipping 62 matching lines @@
     if (!io_thread_->BelongsToCurrentThread()) {
       io_thread_->PostTask(
           FROM_HERE,
           base::Bind(&IOThreadProxy::Cancel, this));
       return;
     }
     if (!operation_) {
       DidFail(base::PLATFORM_FILE_ERROR_INVALID_OPERATION);
       return;
     }
-    operation_->Cancel(GetNewOperation());
+    operation_->Cancel(new CallbackDispatcher(this));
   }
 
  private:
   // Inner class to receive callbacks from FileSystemOperation.
   class CallbackDispatcher : public FileSystemCallbackDispatcher {
    public:
     explicit CallbackDispatcher(IOThreadProxy* proxy) : proxy_(proxy) {
     }
 
     ~CallbackDispatcher() {
@@ skipping 106 matching lines @@
 }
 
 void SimpleFileWriter::DoWrite(
     const GURL& path, const GURL& blob_url, int64 offset) {
   io_thread_proxy_->Write(path, blob_url, offset);
 }
 
 void SimpleFileWriter::DoCancel() {
   io_thread_proxy_->Cancel();
 }