Remove the use of ProvisionalChangeToMainFrameUrl from prerender code.

chrome/browser/prerender/prerender_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 <deque>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 3398 matching lines @@
   // the hanging request to be scheduled.
   ui_test_utils::NavigateToURLWithDisposition(
       current_browser(), kNoCommitUrl, NEW_FOREGROUND_TAB,
       ui_test_utils::BROWSER_TEST_WAIT_FOR_TAB);
   hang_loop.Run();
 
   // Now interrupt that navigation and navigate to the destination URL. This
   // should forcibly complete the previous navigation and also complete a
   // WOULD_HAVE_BEEN_PRERENDERED navigation.
   NavigateToDestURL();
-  histogram_tester().ExpectTotalCount("Prerender.none_PerceivedPLT", 2);
+  histogram_tester().ExpectTotalCount("Prerender.none_PerceivedPLT", 1);
   histogram_tester().ExpectTotalCount("Prerender.none_PerceivedPLTMatched", 0);
   histogram_tester().ExpectTotalCount(
       "Prerender.none_PerceivedPLTMatchedComplete", 0);
   histogram_tester().ExpectTotalCount("Prerender.websame_PerceivedPLT", 1);
   histogram_tester().ExpectTotalCount("Prerender.websame_PerceivedPLTMatched",
                                       0);
   histogram_tester().ExpectTotalCount(
       "Prerender.websame_PerceivedPLTMatchedComplete", 1);
 }
 
@@ skipping 998 matching lines @@
 
   // Navigate to the URL entered.
   omnibox_view->model()->AcceptInput(CURRENT_TAB, false);
 
   // Prerender should be running, but abandoned.
   EXPECT_TRUE(
       GetAutocompleteActionPredictor()->IsPrerenderAbandonedForTesting());
 }
 
 }  // namespace prerender