GURL::Replacements methods accept a StringPiece instead of std::string&.

content/browser/web_contents/web_contents_impl_browsertest.cc

 // Copyright 2013 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 "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/web_contents/web_contents_view.h"
 #include "content/common/frame_messages.h"
@@ skipping 384 matching lines @@
  private:
   RenderFrameHost* last_rfh_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameCreatedObserver);
 };
 
 // Test that creation of new RenderFrameHost objects sends the correct object
 // to the WebContentObservers. See http://crbug.com/347339.
 IN_PROC_BROWSER_TEST_F(WebContentsImplBrowserTest,
                        RenderFrameCreatedCorrectProcessForObservers) {
-  std::string foo_com("foo.com");
+  static const char kFooCom[] = "foo.com";
   GURL::Replacements replace_host;
   net::HostPortPair foo_host_port;
   GURL cross_site_url;
 
   // Setup the server to allow serving separate sites, so we can perform
   // cross-process navigation.
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(test_server()->Start());
 
   foo_host_port = test_server()->host_port_pair();
-  foo_host_port.set_host(foo_com);
+  foo_host_port.set_host(kFooCom);
 
   GURL initial_url(test_server()->GetURL("/title1.html"));
 
   cross_site_url = test_server()->GetURL("/title2.html");
-  replace_host.SetHostStr(foo_com);
+  replace_host.SetHostStr(kFooCom);
   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
 
   // Navigate to the initial URL and capture the RenderFrameHost for later
   // comparison.
   NavigateToURL(shell(), initial_url);
   RenderFrameHost* orig_rfh = shell()->web_contents()->GetMainFrame();
 
   // Install the observer and navigate cross-site.
   RenderFrameCreatedObserver observer(shell());
   NavigateToURL(shell(), cross_site_url);
@@ skipping 204 matching lines @@
       new FirstVisuallyNonEmptyPaintObserver(shell()));
 
   NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
 
   observer->WaitForDidFirstVisuallyNonEmptyPaint();
   ASSERT_TRUE(observer->did_fist_visually_non_empty_paint_);
 }
 
 }  // namespace content