Use a direct include of utf_string_conversions.h in chrome/browser/, part 2.

chrome/browser/iframe_browsertest.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 "base/files/file_path.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
 
 class IFrameTest : public InProcessBrowserTest {
  protected:
   void NavigateAndVerifyTitle(const char* file, const char* page_title) {
     GURL url = ui_test_utils::GetTestUrl(
         base::FilePath(), base::FilePath().AppendASCII(file));
 
     ui_test_utils::NavigateToURL(browser(), url);
     EXPECT_EQ(ASCIIToUTF16(page_title),
               browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
   }
 };
 
 IN_PROC_BROWSER_TEST_F(IFrameTest, Crash) {
   NavigateAndVerifyTitle("iframe.html", "iframe test");
 }
 
 IN_PROC_BROWSER_TEST_F(IFrameTest, InEmptyFrame) {
   NavigateAndVerifyTitle("iframe_in_empty_frame.html", "iframe test");
 }