It is time.

ui/views/win/scoped_fullscreen_visibility.cc

-// 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.
-
-#include "ui/views/win/scoped_fullscreen_visibility.h"
-
-#include "base/logging.h"
-
-namespace views {
-
-// static
-std::map<HWND, int>* ScopedFullscreenVisibility::full_screen_windows_ = NULL;
-
-ScopedFullscreenVisibility::ScopedFullscreenVisibility(HWND hwnd)
-    : hwnd_(hwnd) {
-  if (!full_screen_windows_)
-    full_screen_windows_ = new FullscreenHWNDs;
-  FullscreenHWNDs::iterator it = full_screen_windows_->find(hwnd_);
-  if (it != full_screen_windows_->end()) {
-    it->second++;
-  } else {
-    full_screen_windows_->insert(std::make_pair(hwnd_, 1));
-    // NOTE: Be careful not to activate any windows here (for example, calling
-    // ShowWindow(SW_HIDE) will automatically activate another window).  This
-    // code can be called while a window is being deactivated, and activating
-    // another window will screw up the activation that is already in progress.
-    SetWindowPos(hwnd_, NULL, 0, 0, 0, 0,
-                 SWP_HIDEWINDOW | SWP_NOACTIVATE | SWP_NOMOVE |
-                 SWP_NOREPOSITION | SWP_NOSIZE | SWP_NOZORDER);
-  }
-}
-
-ScopedFullscreenVisibility::~ScopedFullscreenVisibility() {
-  FullscreenHWNDs::iterator it = full_screen_windows_->find(hwnd_);
-  DCHECK(it != full_screen_windows_->end());
-  if (--it->second == 0) {
-    full_screen_windows_->erase(it);
-    ShowWindow(hwnd_, SW_SHOW);
-  }
-  if (full_screen_windows_->empty()) {
-    delete full_screen_windows_;
-    full_screen_windows_ = NULL;
-  }
-}
-
-// static
-bool ScopedFullscreenVisibility::IsHiddenForFullscreen(HWND hwnd) {
-  if (!full_screen_windows_)
-    return false;
-  return full_screen_windows_->find(hwnd) != full_screen_windows_->end();
-}
-
-}  // namespace views