PS - Showing permission prompt for activeTab

chrome/browser/chromeos/extensions/active_tab_permission_granter_delegate_chromeos.cc

+// Copyright 2017 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/chromeos/extensions/active_tab_permission_granter_delegate_chromeos.h"
+
+#include "chrome/browser/chromeos/extensions/public_session_permission_helper.h"
+#include "chrome/browser/profiles/profiles_state.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/permissions/api_permission.h"
+
+namespace extensions {
+
+ActiveTabPermissionGranterDelegateChromeOS::
+    ActiveTabPermissionGranterDelegateChromeOS() {}
+
+ActiveTabPermissionGranterDelegateChromeOS::
+    ~ActiveTabPermissionGranterDelegateChromeOS() {}
+
+bool ActiveTabPermissionGranterDelegateChromeOS::ShouldGrantActiveTab(
+    const Extension* extension,
+    content::WebContents* web_contents) {
+  bool already_handled = permission_helper::HandlePermissionRequest(
+      *extension, {APIPermission::kActiveTab}, web_contents,
+      permission_helper::RequestResolvedCallback(),
+      permission_helper::PromptFactory());
+
+  return already_handled && permission_helper::PermissionAllowed(
+                                extension, APIPermission::kActiveTab);
+}
+
+}  // namespace extensions