Clean up straggler classes to use embedded signin in page in the new profiles world.

chrome/browser/ui/chrome_pages.cc

Index: chrome/browser/ui/chrome_pages.cc
diff --git a/chrome/browser/ui/chrome_pages.cc b/chrome/browser/ui/chrome_pages.cc
index ccfbac461fb8e645b47a66211927e0dd1b331015..ededffbc529b476a790b23cc87b821cbf7ca575a 100644
--- a/chrome/browser/ui/chrome_pages.cc
+++ b/chrome/browser/ui/chrome_pages.cc
@@ -20,10 +20,12 @@
 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
 #include "chrome/browser/ui/settings_window_manager.h"
 #include "chrome/browser/ui/singleton_tabs.h"
+#include "chrome/browser/ui/sync/one_click_signin_helper.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/options/content_settings_handler.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
+#include "components/signin/core/common/profile_management_switches.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/common/constants.h"
@@ -347,8 +349,16 @@ void ShowBrowserSignin(Browser* browser, signin::Source source) {
       browser = displayer->browser();
     }
 
-    NavigateToSingletonTab(browser, GURL(signin::GetPromoURL(source, false)));
-    DCHECK_GT(browser->tab_strip_model()->count(), 0);
+    OneClickSigninHelper::LogHistogramSourceValue(source);
+
+    if (switches::IsNewAvatarMenu()) {
+      browser->window()->ShowAvatarBubbleFromAvatarButton(
+          BrowserWindow::AVATAR_BUBBLE_MODE_SIGNIN,
+          signin::ManageAccountsParams());
+    } else {
+      NavigateToSingletonTab(browser, GURL(signin::GetPromoURL(source, false)));
+      DCHECK_GT(browser->tab_strip_model()->count(), 0);
+    }
   }
 }
 #endif