Pin keyboard use enter to submit when focus is not on a button.

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

Index: chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.html
diff --git a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.html b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.html
index 59895a3bcf3f59a19afbcd818ab15f33a404c50f..6127d6def53797456901420f87ad56254cd7b8cd 100644
--- a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.html
+++ b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.html
@@ -125,7 +125,7 @@
           <input id="pin-input" type="number" placeholder="Enter PIN"
                  value="{{value::input}}"
                  on-keydown="onInputKeyDown_"></input>
-          <paper-button class="digit-button first-row submit-button"
+          <paper-button class="digit-button submit-button"
                         on-tap="firePinSubmitEvent_">
             <div class$="icon-container [[computeSubmitClass_(value)]]">
                 <iron-icon class="icon" icon="icons:forward"><iron-icon>
@@ -134,48 +134,55 @@
         </div>
 
         <div class="row keyboard">
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="1">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="1">
             <inner-text>1</inner-text>
           </paper-button>
-          <paper-button class="digit-button center-button" on-tap="onNumberTap_"
-                        value="2">
+          <paper-button class="digit-button center-button"
+                        on-tap="onNumberTap_" value="2">
             <inner-text>2</inner-text>

[jdufault, 2016/07/06 21:08:51]

Revert all changes in this file.

[sammiequon, 2016/07/06 23:38:02]

Done.

           </paper-button>
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="3">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="3">
             <inner-text>3</inner-text>
           </paper-button>
         </div>
         <div class="row keyboard">
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="4">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="4">
             <inner-text>4</inner-text>
           </paper-button>
-          <paper-button class="digit-button center-button" on-tap="onNumberTap_"
-                        value="5">
+          <paper-button class="digit-button center-button"
+                        on-tap="onNumberTap_" value="5">
             <inner-text>5</inner-text>
           </paper-button>
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="6">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="6">
             <inner-text>6</inner-text>
           </paper-button>
         </div>
         <div class="row keyboard">
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="7">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="7">
             <inner-text>7</inner-text>
           </paper-button>
-          <paper-button class="digit-button center-button" on-tap="onNumberTap_"
-                        value="8">
+          <paper-button class="digit-button center-button"
+                        on-tap="onNumberTap_" value="8">
             <inner-text>8</inner-text>
           </paper-button>
-          <paper-button class="digit-button" on-tap="onNumberTap_" value="9">
+          <paper-button class="digit-button" on-tap="onNumberTap_"
+                        value="9">
             <inner-text>9</inner-text>
           </paper-button>
         </div>
         <div class="row keyboard">
           <div class="digit-button"></div>
-          <paper-button class="digit-button center-button" on-tap="onNumberTap_"
-                        value="0">
+          <paper-button class="digit-button center-button"
+                        on-tap="onNumberTap_" value="1">
             <inner-text>0</inner-text>
           </paper-button>
-          <paper-button class="digit-button clear-button" on-tap="onPinClear_">
+          <paper-button class="digit-button clear-button"
+                        on-tap="onPinClear_">
             <div class="icon-container">
               <iron-icon class="icon" icon="icons:clear"><iron-icon>
             </div>