Options: disallow bad URLs from being entered as startup pages

chrome/browser/ui/webui/settings_utils.cc

+// Copyright 2016 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/webui/settings_utils.h"
+
+#include "chrome/browser/extensions/extension_tab_util.h"
+#include "components/url_formatter/url_fixer.h"
+#include "url/gurl.h"
+
+namespace settings_utils {
+
+bool FixupAndValidateStartupPage(const std::string& url_string,
+                                 GURL* fixed_url) {
+  GURL url = url_formatter::FixupURL(url_string, std::string());
+  bool valid = url.is_valid() && !extensions::ExtensionTabUtil::IsKillURL(url);
+  if (valid && fixed_url)
+    fixed_url->Swap(&url);
+  return valid;
+}
+
+}  // namespace settings_utils