Fix typo in documentation on url::Origin.unique

url/origin.h

 // Copyright 2015 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.
 
 #ifndef URL_ORIGIN_H_
 #define URL_ORIGIN_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 49 matching lines @@
 //
 // Usage:
 //
 // * Origins are generally constructed from an already-canonicalized GURL:
 //
 //     GURL url("https://example.com/");
 //     url::Origin origin(url);
 //     origin.scheme(); // "https"
 //     origin.host(); // "example.com"
 //     origin.port(); // 443
-//     origin.IsUnique(); // false
+//     origin.unique(); // false
 //
 // * To answer the question "Are |this| and |that| "same-origin" with each
 //   other?", use |Origin::IsSameOriginWith|:
 //
 //     if (this.IsSameOriginWith(that)) {
 //       // Amazingness goes here.
 //     }
 class URL_EXPORT Origin {
  public:
   // Creates a unique Origin.
@@ skipping 48 matching lines @@
   SchemeHostPort tuple_;
   bool unique_;
 };
 
 URL_EXPORT std::ostream& operator<<(std::ostream& out,
                                     const Origin& origin);
 
 }  // namespace url
 
 #endif  // URL_ORIGIN_H_