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

content/browser/accessibility/site_per_process_accessibility_browsertest.cc

 // Copyright (c) 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 "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
@@ skipping 59 matching lines @@
   // It is safe to obtain the root frame tree node here, as it doesn't change.
   FrameTreeNode* root =
       static_cast<WebContentsImpl*>(shell()->web_contents())->
           GetFrameTree()->root();
 
   // Load same-site page into iframe.
   FrameTreeNode* child = root->child_at(0);
   GURL http_url(test_server()->GetURL("files/title1.html"));
   NavigateFrameToURL(child, http_url);
 
-  // These must stay in scope with replace_host.
+  // Load cross-site page into iframe.
   GURL::Replacements replace_host;
-  std::string foo_com("foo.com");
-
-  // Load cross-site page into iframe.
   GURL cross_site_url(test_server()->GetURL("files/title2.html"));
-  replace_host.SetHostStr(foo_com);
+  replace_host.SetHostStr("foo.com");
   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
   NavigateFrameToURL(root->child_at(0), cross_site_url);
 
   // Ensure that we have created a new process for the subframe.
   ASSERT_EQ(2U, root->child_count());
   SiteInstance* site_instance = child->current_frame_host()->GetSiteInstance();
   EXPECT_NE(shell()->web_contents()->GetSiteInstance(), site_instance);
 
   // Wait for the accessibility tree from the main frame to load.
   // Because we created the AccessibilityNotificationWaiter before accessibility
@@ skipping 59 matching lines @@
   BrowserAccessibility* ax_child_frame_static_text =
       ax_child_frame_group->PlatformGetChild(0);
   EXPECT_EQ(ui::AX_ROLE_STATIC_TEXT, ax_child_frame_static_text->GetRole());
   ASSERT_EQ(0U, ax_child_frame_static_text->PlatformChildCount());
 
   // Last, check that the parent of the child frame root is correct.
   EXPECT_EQ(ax_child_frame_root->GetParent(), ax_scroll_area);
 }
 
 }  // namespace content