[Mac] Include MacViews native app windows in regular builds.

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

Index: chrome/browser/ui/cocoa/apps/chrome_app_window_client_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/apps/chrome_app_window_client_cocoa.mm b/chrome/browser/ui/cocoa/apps/chrome_app_window_client_cocoa.mm
deleted file mode 100644
index 5a8643371aa4602429a6d9772303775361bb492f..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/apps/chrome_app_window_client_cocoa.mm
+++ /dev/null
@@ -1,14 +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 "chrome/browser/ui/apps/chrome_app_window_client.h"
-
-#import "chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h"
-
-// static
-extensions::NativeAppWindow* ChromeAppWindowClient::CreateNativeAppWindowImpl(
-    extensions::AppWindow* app_window,
-    const extensions::AppWindow::CreateParams& params) {
-  return new NativeAppWindowCocoa(app_window, params);
-}