fix a problem that android cannot download files with basic authentication

net/http/http_cache_transaction.cc

 // 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.
 
 #include "net/http/http_cache_transaction.h"
 
 #include "build/build_config.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
@@ skipping 330 matching lines @@
 
   return rv;
 }
 
 bool HttpCache::Transaction::IsReadyToRestartForAuth() {
   if (!network_trans_.get())
     return false;
   return network_trans_->IsReadyToRestartForAuth();
 }
 
+bool HttpCache::Transaction::HasAuth() const {
+  return network_trans_.get() ? network_trans_->HasAuth() : false;
+}
+
 int HttpCache::Transaction::Read(IOBuffer* buf, int buf_len,
                                  const CompletionCallback& callback) {
   DCHECK(buf);
   DCHECK_GT(buf_len, 0);
   DCHECK(!callback.is_null());
 
   DCHECK(callback_.is_null());
 
   if (!cache_)
     return ERR_UNEXPECTED;
@@ skipping 2158 matching lines @@
 }
 
 int HttpCache::Transaction::ResetCacheIOStart(int return_value) {
   DCHECK(cache_io_start_.is_null());
   if (return_value == ERR_IO_PENDING)
     cache_io_start_ = base::TimeTicks::Now();
   return return_value;
 }
 
 }  // namespace net