fix a problem that android cannot download files with basic authentication

net/http/http_transaction.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_HTTP_HTTP_TRANSACTION_H_
 #define NET_HTTP_HTTP_TRANSACTION_H_
 
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
@@ skipping 57 matching lines @@
                               const CompletionCallback& callback) = 0;
 
   // Returns true if auth is ready to be continued. Callers should check
   // this value anytime Start() completes: if it is true, the transaction
   // can be resumed with RestartWithAuth(L"", L"", callback) to resume
   // the automatic auth exchange. This notification gives the caller a
   // chance to process the response headers from all of the intermediate
   // restarts needed for authentication.
   virtual bool IsReadyToRestartForAuth() = 0;
 
+  // Check whether http request has authentication credentials.
+  virtual bool HasAuth() const = 0;
+
   // Once response info is available for the transaction, response data may be
   // read by calling this method.
   //
   // Response data is copied into the given buffer and the number of bytes
   // copied is returned.  ERR_IO_PENDING is returned if response data is not
   // yet available.  The CompletionCallback is notified when the data copy
   // completes, and it is passed the number of bytes that were successfully
   // copied.  Or, if a read error occurs, the CompletionCallback is notified of
   // the error.  Any other negative return value indicates that the transaction
   // could not be read.
@@ skipping 30 matching lines @@
   // does not modify |load_timing_info| if not currently connected.
   virtual bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const = 0;
 
   // Called when the priority of the parent job changes.
   virtual void SetPriority(RequestPriority priority) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_H_