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

chrome/browser/signin/chrome_signin_helper.cc

Index: chrome/browser/signin/chrome_signin_helper.cc
diff --git a/chrome/browser/signin/chrome_signin_helper.cc b/chrome/browser/signin/chrome_signin_helper.cc
index 0179bf3e3d25f8b3c6cd20cf6021b410c5df0e26..51b15d750c687adcc658b538bec8908cf20f20bd 100644
--- a/chrome/browser/signin/chrome_signin_helper.cc
+++ b/chrome/browser/signin/chrome_signin_helper.cc
@@ -73,8 +73,9 @@ void ProcessMirrorHeaderUIThread(int child_id,
     }
     signin_metrics::LogAccountReconcilorStateOnGaiaResponse(
         account_reconcilor->GetState());
-    browser->window()->ShowAvatarBubbleFromAvatarButton(bubble_mode,
-                                                        manage_accounts_params);
+    browser->window()->ShowAvatarBubbleFromAvatarButton(
+        bubble_mode, manage_accounts_params,
+        signin_metrics::ACCESS_POINT_CONTENT_AREA);
   }
 #else   // defined(OS_ANDROID)
   if (service_type == signin::GAIA_SERVICE_TYPE_INCOGNITO) {