PlzNavigate: identify same-page browser-initiated navigation.

url/url_util.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 "url/url_util.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include "base/debug/leak_annotations.h"
@@ skipping 665 matching lines @@
 }
 
 bool HostIsIPAddress(base::StringPiece host) {
   url::RawCanonOutputT<char, 128> ignored_output;
   url::CanonHostInfo host_info;
   url::CanonicalizeIPAddress(host.data(), Component(0, host.length()),
                              &ignored_output, &host_info);
   return host_info.IsIPAddress();
 }
 
+bool IsFragmentAddedOrUpdated(const GURL& old_url, const GURL& new_url) {
+  if (!new_url.has_ref() || old_url == new_url)
+    return false;
+
+  url::Replacements<char> replacements;
+  replacements.ClearRef();
+  return old_url.ReplaceComponents(replacements) ==
+         new_url.ReplaceComponents(replacements);
+}
+
 bool Canonicalize(const char* spec,
                   int spec_len,
                   bool trim_path_end,
                   CharsetConverter* charset_converter,
                   CanonOutput* output,
                   Parsed* output_parsed) {
   return DoCanonicalize(spec, spec_len, trim_path_end, REMOVE_WHITESPACE,
                         charset_converter, output, output_parsed);
 }
 
@@ skipping 121 matching lines @@
   return DoCompareSchemeComponent(spec, component, compare_to);
 }
 
 bool CompareSchemeComponent(const base::char16* spec,
                             const Component& component,
                             const char* compare_to) {
   return DoCompareSchemeComponent(spec, component, compare_to);
 }
 
 }  // namespace url