[MacViews] Add NativeAppWindowViewsMac and port HideWithApp behavior from NativeAppWindowCocoa.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm

 // Copyright 2013 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.
 
-#import "chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h"
+// This file tests whichever implementation of NativeAppWindow is used.
+// I.e. it could be NativeAppWindowCocoa or ChromeNativeAppWindowViewsMac.
+#include "extensions/browser/app_window/native_app_window.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/mac_util.h"
+#include "base/mac/scoped_nsobject.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/extensions/app_launch_params.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/app_window/app_window_registry.h"
 #include "extensions/common/constants.h"
 
@@ skipping 183 matching lines @@
   watcher.reset([[ScopedNotificationWatcher alloc]
       initWithNotification:NSWindowDidExitFullScreenNotification
                  andObject:ns_window]);
   [ns_window toggleFullScreen:nil];
   [watcher waitForNotification];
   EXPECT_EQ(extensions::AppWindow::FULLSCREEN_TYPE_NONE,
             app_window->fullscreen_types_for_test());
   EXPECT_FALSE(window->IsFullscreen());
   EXPECT_FALSE([ns_window styleMask] & NSFullScreenWindowMask);
 }