PlzNavigate: identify same-page browser-initiated navigation.

ios/web/navigation/navigation_manager_impl.mm

 // 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.
 
 #import "ios/web/navigation/navigation_manager_impl.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 14 matching lines @@
 #endif
 
 namespace {
 
 // Checks whether or not two URL are an in-page navigation (differing only
 // in the fragment).
 bool AreURLsInPageNavigation(const GURL& existing_url, const GURL& new_url) {
   if (existing_url == new_url || !new_url.has_ref())
     return false;
 
-  url::Replacements<char> replacements;
-  replacements.ClearRef();
-  return existing_url.ReplaceComponents(replacements) ==
-         new_url.ReplaceComponents(replacements);
+  return GURL::EqualsIgnoringRef(existing_url, new_url);
 }
 
 }  // anonymous namespace
 
 namespace web {
 
 NavigationManager::WebLoadParams::WebLoadParams(const GURL& url)
     : url(url),
       transition_type(ui::PAGE_TRANSITION_LINK),
       is_renderer_initiated(false),
@@ skipping 350 matching lines @@
 }
 
 bool NavigationManagerImpl::IsRedirectItemAtIndex(int index) const {
   DCHECK_GT(index, 0);
   DCHECK_LT(index, GetItemCount());
   ui::PageTransition transition = GetItemAtIndex(index)->GetTransitionType();
   return transition & ui::PAGE_TRANSITION_IS_REDIRECT_MASK;
 }
 
 }  // namespace web