Removes most of aura dependencies from DefaultState

ash/wm/window_state_util.cc

Index: ash/wm/window_state_util.cc
diff --git a/ash/wm/window_state_util.cc b/ash/wm/window_state_util.cc
deleted file mode 100644
index 36d874433e82a9c5c8f1054bb289519cbeea1fd7..0000000000000000000000000000000000000000
--- a/ash/wm/window_state_util.cc
+++ /dev/null
@@ -1,35 +0,0 @@
-// 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/window_state_util.h"
-
-#include "ash/wm/window_state.h"
-#include "ash/wm/window_state_delegate.h"
-#include "ui/aura/client/aura_constants.h"
-
-namespace ash {
-namespace wm {
-
-void ToggleFullScreen(wm::WindowState* window_state,
-                      WindowStateDelegate* delegate) {
-  // Window which cannot be maximized should not be full screen'ed.
-  // It can, however, be restored if it was full screen'ed.
-  bool is_fullscreen = window_state->IsFullscreen();
-  if (!is_fullscreen && !window_state->CanMaximize())
-    return;
-
-  if (delegate && delegate->ToggleFullscreen(window_state))
-    return;
-
-  if (is_fullscreen) {
-    window_state->Restore();
-  } else {
-    // Set the property to activate full screen.
-    window_state->aura_window()->SetProperty(aura::client::kShowStateKey,
-                                             ui::SHOW_STATE_FULLSCREEN);
-  }
-}
-
-}  // namespace wm
-}  // namespace ash