Migrate (Network)ErrorScreen to ScreenContext

chrome/browser/resources/chromeos/login/screen_error_message.js

Index: chrome/browser/resources/chromeos/login/screen_error_message.js
diff --git a/chrome/browser/resources/chromeos/login/screen_error_message.js b/chrome/browser/resources/chromeos/login/screen_error_message.js
index d0c47e5f0d9784d4b62e11661e6cb78558c90dd9..3f2d44d858f394e8d21e0ad70e8a90a27a4548f6 100644
--- a/chrome/browser/resources/chromeos/login/screen_error_message.js
+++ b/chrome/browser/resources/chromeos/login/screen_error_message.js
@@ -7,6 +7,13 @@
  */
 
 login.createScreen('ErrorMessageScreen', 'error-message', function() {
+  var USER_ACTION_CONFIGURE_CERTS = 'configure-certs';
+  var USER_ACTION_DIAGNOSE = 'diagnose';
+  var USER_ACTION_LAUNCH_OOBE_GUEST = 'launch-oobe-guest';
+  var USER_ACTION_LOCAL_STATE_POWERWASH = 'local-state-error-powerwash';
+  var USER_ACTION_REBOOT = 'reboot';
+  var USER_ACTION_SHOW_CAPTIVE_PORTAL = 'show-captive-portal';
+
   // Link which starts guest session for captive portal fixing.
   /** @const */ var FIX_CAPTIVE_PORTAL_ID = 'captive-portal-fix-link';
 
@@ -85,6 +92,7 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
      * Updates localized content of the screen that is not updated via template.
      */
     updateLocalizedContent: function() {
+      var self = this;
       $('auto-enrollment-offline-message-text').innerHTML =
           loadTimeData.getStringF(
               'autoEnrollmentOfflineMessageBody',
@@ -102,7 +110,8 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
         '<a id="' + FIX_CAPTIVE_PORTAL_ID + '" class="signin-link" href="#">',
         '</a>');
       $(FIX_CAPTIVE_PORTAL_ID).onclick = function() {
-        chrome.send('showCaptivePortal');
+        self.send(login.Screen.CALLBACK_USER_ACTED,
+                  USER_ACTION_SHOW_CAPTIVE_PORTAL);
       };
 
       $('captive-portal-proxy-message-text').innerHTML =
@@ -202,12 +211,13 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
      */
     get buttons() {
       var buttons = [];
+      var self = this;
 
       var rebootButton = this.ownerDocument.createElement('button');
       rebootButton.textContent = loadTimeData.getString('rebootButton');
       rebootButton.classList.add('show-with-ui-state-kiosk-mode');
       rebootButton.addEventListener('click', function(e) {
-        chrome.send('rebootButtonClicked');
+        self.send(login.Screen.CALLBACK_USER_ACTED, USER_ACTION_REBOOT);
         e.stopPropagation();
       });
       buttons.push(rebootButton);
@@ -216,7 +226,7 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
       diagnoseButton.textContent = loadTimeData.getString('diagnoseButton');
       diagnoseButton.classList.add('show-with-ui-state-kiosk-mode');
       diagnoseButton.addEventListener('click', function(e) {
-        chrome.send('diagnoseButtonClicked');
+        self.send(login.Screen.CALLBACK_USER_ACTED, USER_ACTION_DIAGNOSE);
         e.stopPropagation();
       });
       buttons.push(diagnoseButton);
@@ -225,7 +235,8 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
       certsButton.textContent = loadTimeData.getString('configureCertsButton');
       certsButton.classList.add('show-with-ui-state-kiosk-mode');
       certsButton.addEventListener('click', function(e) {
-        chrome.send('configureCertsClicked');
+        self.send(login.Screen.CALLBACK_USER_ACTED,
+                  USER_ACTION_CONFIGURE_CERTS);
         e.stopPropagation();
       });
       buttons.push(certsButton);
@@ -261,7 +272,8 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
         loadTimeData.getString('localStateErrorPowerwashButton');
       powerwashButton.classList.add('show-with-ui-state-local-state-error');
       powerwashButton.addEventListener('click', function(e) {
-        chrome.send('localStateErrorPowerwashButtonClicked');
+        self.send(login.Screen.CALLBACK_USER_ACTED,
+                  USER_ACTION_LOCAL_STATE_POWERWASH);
         e.stopPropagation();
       });
       buttons.push(powerwashButton);
@@ -318,8 +330,12 @@ login.createScreen('ErrorMessageScreen', 'error-message', function() {
      * @private
      */
     launchGuestSession_: function() {
-      chrome.send(Oobe.getInstance().isOobeUI() ?
-          'launchOobeGuestSession' : 'launchIncognito');
+      if (Oobe.getInstance().isOobeUI()) {
+        this.send(login.Screen.CALLBACK_USER_ACTED,
+                  USER_ACTION_LAUNCH_OOBE_GUEST);
+      } else {
+        chrome.send('launchIncognito');
+      }
     },
 
     /**