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

chrome/browser/chromeos/login/signin/oauth2_browsertest.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 <string>
 #include <utility>
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
@@ skipping 512 matching lines @@
       : start_event_(base::WaitableEvent::ResetPolicy::MANUAL,
                      base::WaitableEvent::InitialState::NOT_SIGNALED) {}
 
   ~FakeGoogle() {}
 
   std::unique_ptr<HttpResponse> HandleRequest(const HttpRequest& request) {
     // The scheme and host of the URL is actually not important but required to
     // get a valid GURL in order to parse |request.relative_url|.
     GURL request_url = GURL("http://localhost").Resolve(request.relative_url);
     LOG(WARNING) << "Requesting page " << request.relative_url;
-    std::string request_path = request_url.path();
+    base::StringPiece request_path = request_url.path();
     std::unique_ptr<BasicHttpResponse> http_response(new BasicHttpResponse());
     if (request_path == kHelloPagePath) {  // Serving "google" page.
       start_event_.Signal();
       content::BrowserThread::PostTask(
           content::BrowserThread::UI, FROM_HERE,
           base::Bind(&FakeGoogle::QuitRunnerOnUIThread,
                      base::Unretained(this)));
 
       http_response->set_code(net::HTTP_OK);
       http_response->set_content_type("text/html");
@@ skipping 262 matching lines @@
 
   if (!catcher.GetNextResult()) {
     std::string message = catcher.message();
     ADD_FAILURE() << "Tests failed: " << message;
   }
 
   EXPECT_TRUE(fake_google_.IsPageRequested());
 }
 
 }  // namespace chromeos