Added the chrome://safe-browsing/ page as part of the chrome://about

components/safe_browsing/web_ui/constants.h

Index: components/safe_browsing/web_ui/constants.h
diff --git a/components/safe_browsing/web_ui/constants.h b/components/safe_browsing/web_ui/constants.h
new file mode 100644
index 0000000000000000000000000000000000000000..6169e0653845ce1cae85fe17741828ecd1426572
--- /dev/null
+++ b/components/safe_browsing/web_ui/constants.h
@@ -0,0 +1,16 @@
+// 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.
+
+#ifndef COMPONENTS_SAFE_BROWSING_WEB_UI_CONSTANTS_H_
+#define COMPONENTS_SAFE_BROWSING_WEB_UI_CONSTANTS_H_
+
+namespace safe_browsing {
+
+extern const char kChromeUISafeBrowsingURL[];
+extern const char kChromeUISafeBrowsingHost[];
+extern const char kSbUnderConstruction[];
+
+}  // namespace safe_browsing
+
+#endif  // COMPONENTS_SAFE_BROWSING_WEB_UI_CONSTANTS_H_