Revert "Rename polymer and cr_elements v0_8 to v1_0"

third_party/polymer/v0_8/components/iron-meta/iron-meta.html

 <!--
 @license
 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
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@@ skipping 332 matching lines @@
        * @returns *
        */
       byKey: function(key) {
         return this._metaData && this._metaData[key];
       }
 
     });
 
   })();
 </script>