[Dice] Record user action for signout button

Record user action for signout button in
user menu when the user is signed into
Chrome (not syncing) and Dice is enabled.

Bug: 891070
Change-Id: I3990093b7a59d047eff3ad07310c5c686c90e3ea
Reviewed-on: https://chromium-review.googlesource.com/1255626Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595639}

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

@@ -751,6 +751,7 @@ void ProfileChooserView::ButtonPressed(views::Button* sender,
     dice_accounts_menu_->Show(sender, sync_to_another_account_button_);
   } else if (sender == signout_button_) {
     SignOutAllWebAccounts();
+    base::RecordAction(base::UserMetricsAction("Signin_Signout_FromUserMenu"));
   } else {
     // Either one of the "other profiles", or one of the profile accounts
     // buttons was pressed.

tools/metrics/actions/actions.xml

@@ -17908,6 +17908,17 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action name="Signin_Signout_FromUserMenu">
+  <owner>droger@chromium.org</owner>
+  <owner>msarda@chromium.org</owner>
+  <owner>tangltom@chromium.org</owner>
+  <description>
+    Recorded when the user is signed into Chrome, but not syncing, and clicks
+    the sign out button in the user menu. This is only recorded when Desktop
+    Identity Consistency is enabled.
+  </description>
+</action>
+
 <action name="Signin_Undo_Signin">
   <owner>gogerald@chromium.org</owner>
   <description>