MD Settings: Use "change" event instead of "blur" for settings-input.

chrome/browser/resources/settings/controls/settings_input.js

Index: chrome/browser/resources/settings/controls/settings_input.js
diff --git a/chrome/browser/resources/settings/controls/settings_input.js b/chrome/browser/resources/settings/controls/settings_input.js
index 012a8bcaeccb646c238874c19da2cf913ad8e84c..2652db1763bc0829117c9cedc4143789843170b0 100644
--- a/chrome/browser/resources/settings/controls/settings_input.js
+++ b/chrome/browser/resources/settings/controls/settings_input.js
@@ -90,10 +90,11 @@ Polymer({
   },
 
   /**
-   * Blur method for paper-input. Only update the pref value on a blur event.
+   * Change event handler for paper-input. Updates the pref value.
+   * settings-input uses the change event because it is fired by the Enter key.
    * @private
    */
-  onBlur_: function() {
+  onChange_: function() {
     if (!this.pref)
       return;