MD Settings: Convert all usages of .bind(this) to use ES6 arrow function.

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 91e46daeb08debde986a46bf2e68e3820c99d9c4..0db9c24a31754b9f843b844df432f4bd838d0c8f 100644
--- a/chrome/browser/resources/settings/people_page/manage_profile.js
+++ b/chrome/browser/resources/settings/people_page/manage_profile.js
@@ -67,9 +67,9 @@ Polymer({
 
   /** @override */
   attached: function() {
-    var setIcons = function(icons) {
+    var setIcons = icons => {
       this.availableIcons = icons;
-    }.bind(this);
+    };
 
     this.addWebUIListener('available-icons-changed', setIcons);
     this.browserProxy_.getAvailableIcons().then(setIcons);
@@ -81,7 +81,7 @@ Polymer({
       this.$.name.value = this.profileName;
 
       if (loadTimeData.getBoolean('profileShortcutsEnabled')) {
-        this.browserProxy_.getProfileShortcutStatus().then(function(status) {
+        this.browserProxy_.getProfileShortcutStatus().then(status => {
           if (status == ProfileShortcutStatus.PROFILE_SHORTCUT_SETTING_HIDDEN) {
             this.isProfileShortcutSettingVisible_ = false;
             return;
@@ -90,7 +90,7 @@ Polymer({
           this.isProfileShortcutSettingVisible_ = true;
           this.hasProfileShortcut_ =
               status == ProfileShortcutStatus.PROFILE_SHORTCUT_FOUND;
-        }.bind(this));
+        });
       }
     }
   },