Refactor ShellDesktopController and ShellNativeAppWindow to allow for non-aura implementations.

extensions/browser/app_window/test_app_window_contents.cc

+// 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 "extensions/browser/app_window/test_app_window_contents.h"
+
+#include "content/public/browser/web_contents.h"
+
+namespace extensions {
+
+TestAppWindowContents::TestAppWindowContents(content::WebContents* web_contents)
+    : web_contents_(web_contents) {
+}
+
+TestAppWindowContents::~TestAppWindowContents() {
+}
+
+void TestAppWindowContents::Initialize(content::BrowserContext* context,
+                                       const GURL& url) {
+}
+
+void TestAppWindowContents::LoadContents(int32 creator_process_id) {
+}
+
+void TestAppWindowContents::NativeWindowChanged(
+    NativeAppWindow* native_app_window) {
+}
+
+void TestAppWindowContents::NativeWindowClosed() {
+}
+
+void TestAppWindowContents::DispatchWindowShownForTests() const {
+}
+
+content::WebContents* TestAppWindowContents::GetWebContents() const {
+  return web_contents_.get();
+}
+
+}  // namespace extensions