Moving app_view to extensions.

extensions/browser/guest_view/app_view/app_view_guest_delegate.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/guest_view/app_view/app_view_guest_delegate.h"
+
+namespace extensions {
+
+AppViewGuestDelegate::AppViewGuestDelegate() {
+}
+
+AppViewGuestDelegate::~AppViewGuestDelegate() {
+}
+
+bool AppViewGuestDelegate::OnHandleContextMenu(
+    content::WebContents* web_contents,
+    const content::ContextMenuParams& params) {
+  return false;
+}
+
+}  // namespace extensions