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

content/browser/webui/url_data_manager_backend.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 "content/browser/webui/url_data_manager_backend.h"
 
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 551 matching lines @@
     if (request->url().SchemeIs(kChromeUIScheme) &&
         request->url().host_piece() == kChromeUIHistogramHost) {
       return new HistogramInternalsRequestJob(request, network_delegate);
     }
 
     // Check for chrome://network-error/, which uses its own job type.
     if (request->url().SchemeIs(kChromeUIScheme) &&
         request->url().host_piece() == kChromeUINetworkErrorHost) {
       // Get the error code passed in via the request URL path.
       std::basic_string<char> error_code_string =
-          request->url().path().substr(1);
+          request->url().path().substr(1).as_string();
 
       int error_code;
       if (base::StringToInt(error_code_string, &error_code)) {
         // Check for a valid error code.
         if (IsValidNetworkErrorCode(error_code) &&
             error_code != net::Error::ERR_IO_PENDING) {
           return new net::URLRequestErrorJob(request, network_delegate,
                                              error_code);
         }
       }
@@ skipping 266 matching lines @@
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler* CreateDevToolsProtocolHandler(
     ResourceContext* resource_context,
     bool is_incognito) {
   return new DevToolsJobFactory(resource_context, is_incognito);
 }
 
 }  // namespace content