Update Polymer from 1.2.1 -> 1.2.3

third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout.html

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 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
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@@ skipping 277 matching lines @@
       right: 0;
       bottom: 0;
       left: 0;
     };
 
     --layout-scroll: {
       -webkit-overflow-scrolling: touch;
       overflow: auto;
     };
 
+    --layout-fullbleed: {
+      margin: 0;
+      height: 100vh;
+    }
+
     /* fixed position */
 
     --layout-fixed-top: {
       position: fixed;
       top: 0;
       left: 0;
       right: 0;
     };
 
     --layout-fixed-right: {
@@ skipping 13 matching lines @@
     --layout-fixed-left: {
       position: fixed;
       top: 0;
       bottom: 0;
       left: 0;
     };
 
   }
 
 </style>