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

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

Index: chrome/browser/resources/settings/people_page/manage_profile.js
diff --git a/chrome/browser/resources/settings/people_page/manage_profile.js b/chrome/browser/resources/settings/people_page/manage_profile.js
index 6b757451dc660b1a45dc66efb8023aa5ee35de82..4fdf6f4bc1f46166d5d60d856b4fe102c9b952b6 100644
--- a/chrome/browser/resources/settings/people_page/manage_profile.js
+++ b/chrome/browser/resources/settings/people_page/manage_profile.js
@@ -91,8 +91,8 @@ Polymer({
 
   /**
    * Handler for when the profile name field is changed, then blurred.
-   * @private
    * @param {!Event} event
+   * @private
    */
   onProfileNameChanged_: function(event) {
     if (event.target.invalid)
@@ -103,6 +103,18 @@ Polymer({
   },
 
   /**
+   * 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