cros: CustomFrameViewAsh avatar icon from a window prop

ash/wm/maximize_mode/maximize_mode_window_manager.cc

 // Copyright 2014 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.
 
 #include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
 
 #include "ash/ash_switches.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
-#include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.h"
 #include "ash/wm/maximize_mode/maximize_mode_event_handler.h"
 #include "ash/wm/maximize_mode/maximize_mode_window_state.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/overview/window_selector_controller.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/wm_event.h"
 #include "ash/wm/workspace_controller.h"
@@ skipping 279 matching lines @@
   // Inform the WorkspaceLayoutManager that we want to show a backdrop behind
   // the topmost window of its container.
   for (auto* controller : Shell::GetAllRootWindowControllers()) {
     controller->workspace_controller()->SetBackdropDelegate(
         enable ? base::MakeUnique<MaximizeModeBackdropDelegateImpl>()
                : nullptr);
   }
 }
 
 }  // namespace ash