Adding new user menu section to the SystemTrayMenu & refactoring of user access

ash/system/tray/system_tray_delegate.h

Index: ash/system/tray/system_tray_delegate.h
diff --git a/ash/system/tray/system_tray_delegate.h b/ash/system/tray/system_tray_delegate.h
index 162920a62f884dc7b21c142f5617ef2d1d15bf06..d0554a9d91cbc2e0a4aac845697b71dba18fdc2e 100644
--- a/ash/system/tray/system_tray_delegate.h
+++ b/ash/system/tray/system_tray_delegate.h
@@ -110,8 +110,6 @@ typedef std::vector<IMEInfo> IMEInfoList;
 
 class VolumeControlDelegate;
 
-typedef std::vector<std::string> UserEmailList;
-
 class SystemTrayDelegate {
  public:
   virtual ~SystemTrayDelegate() {}
@@ -126,18 +124,9 @@ class SystemTrayDelegate {
   virtual bool GetTrayVisibilityOnStartup() = 0;
 
   // Gets information about the active user.
-  virtual const base::string16 GetUserDisplayName() const = 0;
-  virtual const std::string GetUserEmail() const = 0;
-  virtual const gfx::ImageSkia& GetUserImage() const = 0;
   virtual user::LoginStatus GetUserLoginStatus() const = 0;
   virtual bool IsOobeCompleted() const = 0;
 
-  // Returns a list of all logged in users.
-  virtual void GetLoggedInUsers(UserEmailList* users) = 0;
-
-  // Switches to another active user (if that user has already signed in).
-  virtual void SwitchActiveUser(const std::string& email) = 0;
-
   // Shows UI for changing user's profile picture.
   virtual void ChangeProfilePicture() = 0;