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

net/url_request/sdch_dictionary_fetcher_unittest.cc

 // Copyright 2014 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/url_request/sdch_dictionary_fetcher.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 150 matching lines @@
         lifecycle_callback_(lifecycle_callback) {
     DCHECK(!lifecycle_callback_.is_null());
   }
   ~SDCHTestRequestInterceptor() override {}
 
   URLRequestJob* MaybeInterceptRequest(
       URLRequest* request,
       NetworkDelegate* network_delegate) const override {
     lifecycle_callback_.Run(1, 0);
 
-    std::string path = request->url().path();
+    base::StringPiece path = request->url().path();
     if (base::StartsWith(path, kRedirectPath, base::CompareCase::SENSITIVE)) {
       return new TestURLRequestRedirectJob(
-          request, network_delegate, GURL(path.substr(strlen(kRedirectPath))),
+          request, network_delegate,
+          GURL(path.substr(strlen(kRedirectPath)).as_string()),
           URLRequestRedirectJob::REDIRECT_307_TEMPORARY_REDIRECT, "testing",
           base::Bind(lifecycle_callback_, -1, 0));
     }
 
     std::unique_ptr<URLRequestSpecifiedResponseJob> job(
         new URLRequestSpecifiedResponseJob(
             request, network_delegate, *http_response_info_,
             base::Bind(lifecycle_callback_, -1)));
     if (base::StartsWith(path, kBodyErrorPath, base::CompareCase::SENSITIVE))
       job->set_final_read_result(net::ERR_FAILED);
@@ skipping 385 matching lines @@
   // Should only have a dictionary for the successful request.
   ASSERT_EQ(1u, additions.size());
   EXPECT_EQ(
       URLRequestSpecifiedResponseJob::ExpectedResponseForURL(dictionary_url),
       additions[0].dictionary_text);
 }
 
 }  // namespace
 
 }  // namespace net