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

chrome/browser/ui/webui/app_launcher_login_handler.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/webui/app_launcher_login_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 108 matching lines @@
                              .email;
   if (!username.empty())
     return;
 
   content::WebContents* web_contents = web_ui()->GetWebContents();
   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
   if (!browser)
     return;
 
   // The user isn't signed in, show the sign in promo.
-  signin_metrics::Source source =
-      web_contents->GetURL().spec() == chrome::kChromeUIAppsURL ?
-          signin_metrics::SOURCE_APPS_PAGE_LINK :
-          signin_metrics::SOURCE_NTP_LINK;
-  chrome::ShowBrowserSignin(browser, source);
+  signin_metrics::AccessPoint access_point =
+      web_contents->GetURL().spec() == chrome::kChromeUIAppsURL
+          ? signin_metrics::ACCESS_POINT_APPS_PAGE_LINK
+          : signin_metrics::ACCESS_POINT_NTP_LINK;
+  chrome::ShowBrowserSignin(browser, access_point);
   RecordInHistogram(NTP_SIGN_IN_PROMO_CLICKED);
 }
 
 void AppLauncherLoginHandler::RecordInHistogram(int type) {
   // Invalid type to record.
   if (type < NTP_SIGN_IN_PROMO_VIEWED ||
       type > NTP_SIGN_IN_PROMO_CLICKED) {
     NOTREACHED();
   } else {
     UMA_HISTOGRAM_ENUMERATION("SyncPromo.NTPPromo", type,
                               NTP_SIGN_IN_PROMO_BUCKET_BOUNDARY);
   }
 }
 
 void AppLauncherLoginHandler::HandleLoginMessageSeen(
     const base::ListValue* args) {
   Profile::FromWebUI(web_ui())->GetPrefs()->SetBoolean(
       prefs::kSignInPromoShowNTPBubble, false);
   NewTabUI* ntp_ui = NewTabUI::FromWebUIController(web_ui()->GetController());
   // When instant extended is enabled, there may not be a NewTabUI object.
   if (ntp_ui)
     ntp_ui->set_showing_sync_bubble(true);
 }
 
 void AppLauncherLoginHandler::HandleShowAdvancedLoginUI(
     const base::ListValue* args) {
   Browser* browser =
       chrome::FindBrowserWithWebContents(web_ui()->GetWebContents());
   if (browser)
-    chrome::ShowBrowserSignin(browser, signin_metrics::SOURCE_NTP_LINK);
+    chrome::ShowBrowserSignin(browser, signin_metrics::ACCESS_POINT_NTP_LINK);

[Roger Tawa OOO till Jul 10th, 2015/12/02 20:33:48]

I wonder if we need the same logic as above.  I know the old code did not do
that, but it could have been wrong.  Can you check if this is only possible from
ntp?

[gogerald1, 2015/12/03 17:49:03]

Yes, we should check it as above, it is an 'advanced' link in sign in promo
bubble of logn in container of a new page.

 }
 
 void AppLauncherLoginHandler::UpdateLogin() {
   std::string username = profile_info_watcher_->GetAuthenticatedUsername();
   base::string16 header, sub_header;
   std::string icon_url;
   Profile* profile = Profile::FromWebUI(web_ui());
   if (!username.empty()) {
     ProfileInfoCache& cache =
         g_browser_process->profile_manager()->GetProfileInfoCache();
@@ skipping 70 matching lines @@
   values->SetString("login_status_message", message);
   values->SetString("login_status_url",
       hide_sync ? std::string() : chrome::kSyncLearnMoreURL);
   values->SetString("login_status_advanced",
       hide_sync ? base::string16() :
       l10n_util::GetStringUTF16(IDS_SYNC_PROMO_NTP_BUBBLE_ADVANCED));
   values->SetString("login_status_dismiss",
       hide_sync ? base::string16() :
       l10n_util::GetStringUTF16(IDS_SYNC_PROMO_NTP_BUBBLE_OK));
 }