cros: Removed some zones in the middle of the pin keyboard that do not accept touches.

chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js

 // Copyright 2016 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.
 
 /**
  * @fileoverview
  * 'pin-keyboard' is a keyboard that can be used to enter PINs or more generally
  * numeric values.
  *
  * Properties:
@@ skipping 81 matching lines @@
     }
   },
 
   /**
    * @override
    */
   attached: function() {
     // Remove the space/enter key binds from the polymer
     // iron-a11y-keys-behavior.
     var digitButtons = Polymer.dom(this.root).querySelectorAll('.digit-button');
-    for (var i = 0; i < digitButtons.length; ++i)
+    for (var i = 0; i < digitButtons.length; ++i) {
       digitButtons[i].keyEventTarget = null;
+      digitButtons[i].noink = true;

[jdufault, 2016/10/17 19:25:13]

Set this inside of the HTML?

  <paper-button noink class="digit-button" ...>

[sammiequon, 2016/10/17 23:56:14]

Done.

+    }
   },
 
   /**
    * Gets the container holding the password field.
    * @type {!HTMLInputElement}
    */
   get inputElement() {
     return this.$$('#pin-input');
   },
 
@@ skipping 198 matching lines @@
     // does not contain decimals.
     // This heuristic will fail for inputs like '1.0'.
     //
     // Since we still support users entering their passwords through the PIN
     // keyboard, we swap the input box to rtl when we think it is a password
     // (just numbers), if the document direction is rtl.
     return (document.dir == 'rtl') && !Number.isInteger(+password);
   },
 });
 })();