[WIP] make GURL::path() return a StringPiece

net/url_request/url_request_file_job.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.
 
 // For loading files, we make use of overlapped i/o to ensure that reading from
 // the filesystem (e.g., a network filesystem) does not block the calling
 // thread.  An alternative approach would be to use a background thread or pool
 // of threads, but it seems better to leverage the operating system's ability
 // to do background file reads for us.
 //
@@ skipping 96 matching lines @@
   }
 
   return rv;
 }
 
 bool URLRequestFileJob::IsRedirectResponse(GURL* location,
                                            int* http_status_code) {
   if (meta_info_.is_directory) {
     // This happens when we discovered the file is a directory, so needs a
     // slash at the end of the path.
-    std::string new_path = request_->url().path();
+    std::string new_path = request_->url().path().as_string();
     new_path.push_back('/');
     GURL::Replacements replacements;
     replacements.SetPathStr(new_path);
 
     *location = request_->url().ReplaceComponents(replacements);
     *http_status_code = 301;  // simulate a permanent redirect
     return true;
   }
 
 #if defined(OS_WIN)
@@ skipping 167 matching lines @@
     DCHECK_GE(remaining_bytes_, 0);
   }
 
   OnReadComplete(buf.get(), result);
   buf = NULL;
 
   ReadRawDataComplete(result);
 }
 
 }  // namespace net