Add GURL::EqualsIgnoringRef().

url/gurl.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/gurl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <ostream>
@@ skipping 450 matching lines @@
 bool GURL::DomainIs(base::StringPiece lower_ascii_domain) const {
   if (!is_valid_)
     return false;
 
   // FileSystem URLs have empty host_piece, so check this first.
   if (SchemeIsFileSystem() && inner_url_)
     return inner_url_->DomainIs(lower_ascii_domain);
   return url::DomainIs(host_piece(), lower_ascii_domain);
 }
 
+bool GURL::EqualsIgnoringRef(const GURL& other) const {
+  int ref_position = parsed_.CountCharactersBefore(url::Parsed::REF, true);
+  int ref_position_other =
+      other.parsed_.CountCharactersBefore(url::Parsed::REF, true);
+  return base::StringPiece(spec_).substr(0, ref_position) ==
+         base::StringPiece(other.spec_).substr(0, ref_position_other);
+}
+
 void GURL::Swap(GURL* other) {
   spec_.swap(other->spec_);
   std::swap(is_valid_, other->is_valid_);
   std::swap(parsed_, other->parsed_);
   inner_url_.swap(other->inner_url_);
 }
 
 size_t GURL::EstimateMemoryUsage() const {
   return base::trace_event::EstimateMemoryUsage(spec_) +
          base::trace_event::EstimateMemoryUsage(inner_url_) +
@@ skipping 13 matching lines @@
 }
 
 bool operator==(const GURL& x, const base::StringPiece& spec) {
   DCHECK_EQ(GURL(spec).possibly_invalid_spec(), spec);
   return x.possibly_invalid_spec() == spec;
 }
 
 bool operator!=(const GURL& x, const base::StringPiece& spec) {
   return !(x == spec);
 }