Allow URLFetcher to save results in a file. Have CRX updates use this capability.

net/url_request/url_request.h

 // 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.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 30 matching lines @@
 class URLRequestContext;
 class URLRequestJob;
 class X509Certificate;
 
 // This stores the values of the Set-Cookie headers received during the request.
 // Each item in the vector corresponds to a Set-Cookie: line received,
 // excluding the "Set-Cookie:" part.
 typedef std::vector<std::string> ResponseCookies;
 
 //-----------------------------------------------------------------------------
-// A class  representing the asynchronous load of a data stream from an URL.
+// A class representing the asynchronous load of a data stream from an URL.
 //
 // The lifetime of an instance of this class is completely controlled by the
 // consumer, and the instance is not required to live on the heap or be
 // allocated in any special way.  It is also valid to delete an URLRequest
 // object during the handling of a callback to its delegate.  Of course, once
 // the URLRequest is deleted, no further callbacks to its delegate will occur.
 //
 // NOTE: All usage of all instances of this class should be on the same thread.
 //
 class URLRequest : public base::NonThreadSafe {
@@ skipping 608 matching lines @@
   // Callback passed to the network delegate to notify us when a blocked request
   // is ready to be resumed or canceled.
   CompletionCallbackImpl<URLRequest> before_request_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_