Add GURL::EqualsIgnoringRef().

url/gurl.h

Index: url/gurl.h
diff --git a/url/gurl.h b/url/gurl.h
index 175cb60def48517a0301c39d0d6d1f5dcf8e2c69..d7d575b1e1633d3ddf95006043042dd7da37befc 100644
--- a/url/gurl.h
+++ b/url/gurl.h
@@ -385,6 +385,10 @@ class URL_EXPORT GURL {
   // object constructions are done.
   bool DomainIs(base::StringPiece lower_ascii_domain) const;
 
+  // Checks whether or not two URLs are differing only in the ref (the part
+  // after the # character).
+  bool EqualsIgnoringRef(const GURL& other) const;
+
   // Swaps the contents of this GURL object with |other|, without doing
   // any memory allocations.
   void Swap(GURL* other);