Add native permissions dialog for apps_devtools app.

chrome/browser/extensions/extension_permissions_prompt.cc

+// Copyright (c) 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.
+
+#include "chrome/browser/extensions/extension_permissions_prompt.h"
+
+#include "base/message_loop.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/permissions/permission_set.h"
+
+ExtensionPermissionsPrompt::ExtensionPermissionsPrompt(
+    content::WebContents* contents) : ExtensionInstallPrompt(contents) {
+}
+
+void ExtensionPermissionsPrompt::PermissionsDialog(
+    Delegate* delegate,
+    const extensions::Extension* extension) {
+
+  DCHECK(ui_loop_ == MessageLoop::current());
+  extension_ = extension;
+  permissions_ = extension->GetActivePermissions();
+  delegate_ = delegate;
+  prompt_.set_type(POST_INSTALL_PERMISSIONS_PROMPT);
+
+  // TODO(grv): Load extension icon.
+  SetIcon(NULL);
+  FetchOAuthIssueAdviceIfNeeded();
+}
+