Add ink drop ripple to status tray

ash/common/system/user/tray_user.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_COMMON_SYSTEM_USER_TRAY_USER_H_
 #define ASH_COMMON_SYSTEM_USER_TRAY_USER_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/session/session_types.h"
 #include "ash/common/system/tray/system_tray_item.h"
@@ skipping 42 matching lines @@
   // Returns the bounds of the user panel in screen coordinates.
   // Note: This only works when the panel shown.
   gfx::Rect GetUserPanelBoundsInScreenForTest() const;
 
   // Update the TrayUser as if the current LoginStatus is |status|.
   void UpdateAfterLoginStatusChangeForTest(LoginStatus status);
 
   // Use for access inside of tests.
   tray::UserView* user_view_for_test() const { return user_; }
 
+  bool is_avatar_visible() const { return avatar_ != nullptr; }
+
  private:
   // Overridden from SystemTrayItem.
   views::View* CreateTrayView(LoginStatus status) override;
   views::View* CreateDefaultView(LoginStatus status) override;
   void DestroyTrayView() override;
   void DestroyDefaultView() override;
   void UpdateAfterLoginStatusChange(LoginStatus status) override;
   void UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) override;
 
   // Overridden from UserObserver.
@@ skipping 14 matching lines @@
   views::View* layout_view_;
   tray::RoundedImageView* avatar_;
   views::Label* label_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayUser);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_USER_TRAY_USER_H_