Use TaskScheduler instead of WorkerPool in url_request_simple_job.cc.

net/url_request/url_request_simple_job.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 42 matching lines @@
                       std::string* data,
                       const CompletionCallback& callback) const;
 
   // Similar to GetData(), except |*data| can share ownership of the bytes
   // instead of copying them into a std::string.
   virtual int GetRefCountedData(std::string* mime_type,
                                 std::string* charset,
                                 scoped_refptr<base::RefCountedMemory>* data,
                                 const CompletionCallback& callback) const;
 
-  // Returns the task runner used by ReadRawData. This method is virtual so
-  // that it can be overridden in tests.
-  virtual base::TaskRunner* GetTaskRunner() const;
-
   void StartAsync();
 
  private:
   void OnGetDataCompleted(int result);
 
   HttpByteRange byte_range_;
   std::string mime_type_;
   std::string charset_;
   scoped_refptr<base::RefCountedMemory> data_;
   int64_t next_data_offset_;
-  scoped_refptr<base::TaskRunner> task_runner_;
   base::WeakPtrFactory<URLRequestSimpleJob> weak_factory_;
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_