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

chrome/test/base/test_browser_window.h

Index: chrome/test/base/test_browser_window.h
diff --git a/chrome/test/base/test_browser_window.h b/chrome/test/base/test_browser_window.h
index 0e4bfcda3ebba37489a5eb2893a79a2288f3479a..837a2915c9223bd009c4154652ef38338b41b288 100644
--- a/chrome/test/base/test_browser_window.h
+++ b/chrome/test/base/test_browser_window.h
@@ -147,7 +147,8 @@ class TestBrowserWindow : public BrowserWindow {
       override;
   void ShowAvatarBubbleFromAvatarButton(
       AvatarBubbleMode mode,
-      const signin::ManageAccountsParams& manage_accounts_params) override {}
+      const signin::ManageAccountsParams& manage_accounts_params,
+      signin_metrics::AccessPoint access_point) override {}
   int GetRenderViewHeightInsetWithDetachedBookmarkBar() override;
   void ExecuteExtensionCommand(const extensions::Extension* extension,
                                const extensions::Command& command) override;