Implement newly designed sign-in related histograms for desktop platorms.

chrome/browser/ui/webui/sync_setup_browsertest.js

Index: chrome/browser/ui/webui/sync_setup_browsertest.js
diff --git a/chrome/browser/ui/webui/sync_setup_browsertest.js b/chrome/browser/ui/webui/sync_setup_browsertest.js
index e65c4026e26595716324876aa4242f40b592fdde..98f08d12844bb4b8ed70ae451c7693a3427ec205 100644
--- a/chrome/browser/ui/webui/sync_setup_browsertest.js
+++ b/chrome/browser/ui/webui/sync_setup_browsertest.js
@@ -85,7 +85,7 @@ TEST_F('SyncSetupWebUITestAsync', 'VerifySignIn', function() {
   // Handle SyncSetupStartSignIn by displaying the sync setup dialog, verifying
   // that a confirmation dialog appears, and clicking OK to dismiss the dialog.
   // Note that this test doesn't actually do a gaia sign in.
-  this.mockHandler.expects(once()).SyncSetupStartSignIn().will(callFunction(
+  this.mockHandler.expects(once()).SyncSetupStartSignIn('access-point-settings').will(callFunction(
       function() {
     SyncSetupOverlay.showSyncSetupPage('configure');
     var okButton = $('confirm-everything-ok');
@@ -103,7 +103,7 @@ TEST_F('SyncSetupWebUITestAsync', 'VerifySignIn', function() {
 
 // Test that switching to and from "Sync everything" saves and restores types.
 TEST_F('SyncSetupWebUITestAsync', 'RestoreSyncDataTypes', function() {
-  this.mockHandler.expects(once()).SyncSetupStartSignIn().will(callFunction(
+  this.mockHandler.expects(once()).SyncSetupStartSignIn('access-point-settings').will(callFunction(
       function() {
     SyncSetupOverlay.showSyncSetupPage('configure', {});