Removal of drag window to user tray icon functionality

ash/session_state_delegate.h

Index: ash/session_state_delegate.h
diff --git a/ash/session_state_delegate.h b/ash/session_state_delegate.h
index 91c6229133ea58d4b4ad5a7125a090ff2ee6b46f..31e34c9b016a494b3a76cae06070fe388959d8ec 100644
--- a/ash/session_state_delegate.h
+++ b/ash/session_state_delegate.h
@@ -109,13 +109,6 @@ class ASH_EXPORT SessionStateDelegate {
   // Adds or removes sessions state observer.
   virtual void AddSessionStateObserver(SessionStateObserver* observer) = 0;
   virtual void RemoveSessionStateObserver(SessionStateObserver* observer) = 0;
-
-  // Transfers the visibility of a window to another user. Returns true when
-  // transfer was done. This could fail if the |window| belongs to no one and
-  // is therefore shown on the desktop of every user.
-  virtual bool TransferWindowToDesktopOfUser(
-      aura::Window* window,
-      ash::MultiProfileIndex index) = 0;
 };
 
 }  // namespace ash