MD Settings: Make Escape blur and undo changes to input fields.

chrome/browser/resources/settings/people_page/manage_profile.js

 // Copyright 2015 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
  * 'settings-manage-profile' is the settings subpage containing controls to
  * edit a profile's name, icon, and desktop shortcut.
  */
 Polymer({
@@ skipping 73 matching lines @@
           this.isProfileShortcutSettingVisible_ = true;
           this.hasProfileShortcut_ =
               status == ProfileShortcutStatus.PROFILE_SHORTCUT_FOUND;
         }.bind(this));
       }
     }
   },
 
   /**
    * Handler for when the profile name field is changed, then blurred.
+   * @param {!Event} event
    * @private
-   * @param {!Event} event
    */
   onProfileNameChanged_: function(event) {
     if (event.target.invalid)
       return;
 
     this.browserProxy_.setProfileIconAndName(this.profileIconUrl,
                                              event.target.value);
   },
 
   /**
+   * Handler for profile name keydowns.
+   * @param {!Event} event
+   * @private
+   */
+  onProfileNameKeydown_: function(event) {
+    if (event.key == 'Escape') {
+      event.target.value = this.profileName;
+      event.target.blur();
+    }
+  },
+
+  /**
    * Handler for when an avatar is activated.
    * @param {!Event} event
    * @private
    */
   onIconActivate_: function(event) {
     this.browserProxy_.setProfileIconAndName(event.detail.selected,
                                              this.profileName);
   },
 
   /**
@@ skipping 11 matching lines @@
    * @private
    */
   onHasProfileShortcutChange_: function(event) {
     if (this.hasProfileShortcut_) {
       this.browserProxy_.addProfileShortcut();
     } else {
       this.browserProxy_.removeProfileShortcut();
     }
   }
 });