Revert "Rename polymer and cr_elements v0_8 to v1_0"

third_party/polymer/v0_8/components/paper-button/paper-button.html

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 @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
 The complete set of authors may be found at http://polymer.github.io/AUTHORS
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
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@@ skipping 157 matching lines @@
     _computeContentClass: function(receivedFocusFromKeyboard) {
       var className = 'content ';
       if (receivedFocusFromKeyboard) {
         className += ' keyboard-focus';
       }
       return className;
     }
   });
 
 </script>