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

components/safe_browsing/web_ui/BUILD.gn

+# 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.
+
+static_library("web_ui") {
+  sources = [
+    "safe_browsing_ui.cc",
+    "safe_browsing_ui.h",
+  ]
+
+  deps = [
+    ":constants",
+    "//base",
+    "//components/resources:components_resources_grit",
+    "//components/resources:components_scaled_resources_grit",
+    "//components/strings:components_strings_grit",
+    "//content/public/browser",
+    "//net",
+    "//url",
+  ]
+}
+
+static_library("constants") {
+  sources = [
+    "constants.cc",
+    "constants.h",
+  ]
+}