[dice] Record Signin_Impression_FromAvatarBubbleSignin user actions.

This CL records the user actions:
* Signin_Impression_FromAvatarBubbleSignin.
* Signin_Impression{With|No}Account_FromAvatarBubbleSignin

Bug: 819432
Change-Id: Ica6334eb9fbe63ed9db285379095d7a5613b4370
Reviewed-on: https://chromium-review.googlesource.com/1007442Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Thomas Tangl <tangltom@chromium.org>
Commit-Queue: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550613}

chrome/browser/ui/views/profiles/profile_chooser_view.cc

@@ -1105,6 +1105,13 @@ views::View* ProfileChooserView::CreateDiceSigninView() {
       promotext_top_spacing, kMenuEdgeMargin, 0, kMenuEdgeMargin));
   view->AddChildView(promo);
 
+  // Log sign-in impressions user metrics.
+  signin_metrics::RecordSigninImpressionUserActionForAccessPoint(
+      signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
+  signin_metrics::RecordSigninImpressionWithAccountUserActionForAccessPoint(
+      signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN,
+      show_personalized_promo);
+
   if (!show_personalized_promo) {
     // Create a sign-in button without account information.
     dice_signin_button_view_ = new DiceSigninButtonView(this);