Roll third_party/polymer.

third_party/polymer/v1_0/components-chromium/paper-dialog-behavior/paper-dialog-shared-styles.html

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 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
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 <dom-module id="paper-dialog-shared-styles">
   <template>
     <style>
       :host {
         display: block;
         margin: 24px 40px;
-        -webkit-overflow-scrolling: touch;
 
         background: var(--paper-dialog-background-color, --primary-background-color);
         color: var(--paper-dialog-color, --primary-text-color);
 
         @apply(--paper-font-body1);
         @apply(--shadow-elevation-16dp);
         @apply(--paper-dialog);
       }
 
       :host > ::content > * {
@@ skipping 27 matching lines @@
         margin: 0;
 
         color: var(--paper-dialog-button-color, --primary-color);
 
         @apply(--layout-horizontal);
         @apply(--layout-end-justified);
       }
     </style>
   </template>
 </dom-module>