mash: remove more shell/shelf WmWindow usage.

ash/wm/immersive_context_ash.cc

 // Copyright 2016 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/immersive_context_ash.h"
 
 #include "ash/shared/immersive_fullscreen_controller.h"
 #include "ash/shelf/wm_shelf.h"
+#include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm_window.h"
 #include "base/logging.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
@@ skipping 11 matching lines @@
 void ImmersiveContextAsh::OnEnteringOrExitingImmersive(
     ImmersiveFullscreenController* controller,
     bool entering) {
   WmWindow* window = WmWindow::Get(controller->widget()->GetNativeWindow());
   wm::WindowState* window_state = window->GetWindowState();
   // Auto hide the shelf in immersive fullscreen instead of hiding it.
   window_state->set_hide_shelf_when_fullscreen(!entering);
   // Update the window's immersive mode state for the window manager.
   window_state->set_in_immersive_fullscreen(entering);
 
-  for (WmWindow* root_window : ShellPort::Get()->GetAllRootWindows())
+  for (aura::Window* root_window : Shell::GetAllRootWindows())
     WmShelf::ForWindow(root_window)->UpdateVisibilityState();
 }
 
 gfx::Rect ImmersiveContextAsh::GetDisplayBoundsInScreen(views::Widget* widget) {
   WmWindow* window = WmWindow::Get(widget->GetNativeWindow());
   return window->GetDisplayNearestWindow().bounds();
 }
 
 void ImmersiveContextAsh::AddPointerWatcher(
     views::PointerWatcher* watcher,
     views::PointerWatcherEventTypes events) {
   ShellPort::Get()->AddPointerWatcher(watcher, events);
 }
 
 void ImmersiveContextAsh::RemovePointerWatcher(views::PointerWatcher* watcher) {
   ShellPort::Get()->RemovePointerWatcher(watcher);
 }
 
 bool ImmersiveContextAsh::DoesAnyWindowHaveCapture() {
   return wm::GetCaptureWindow() != nullptr;
 }
 
 bool ImmersiveContextAsh::IsMouseEventsEnabled() {
   return ShellPort::Get()->IsMouseEventsEnabled();
 }
 
 }  // namespace ash