Add the NotificationDatabaseData structure and protobuf

content/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//testing/test.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
@@ skipping 430 matching lines @@
 
 if (!is_mac) {  # TODO(GYP) enable on Mac once it links.
   test("content_unittests") {
     sources = rebase_path(content_tests_gypi_values.content_unittests_sources,
                           ".",
                           "//content")
     deps = [
       ":test_support",
       "//base/allocator",
       "//base/test:test_support",
+      "//content/browser/notifications:notification_proto",
       "//content/browser/service_worker:service_worker_proto",
       "//content/browser/speech/proto",
       "//content/public/browser",
       "//content/public/common",
       "//content/public/common:mojo_bindings",
       "//crypto",
       "//device/battery",
       "//device/battery:mojo_bindings",
       "//mojo/environment:chromium",
       "//net:test_support",
@@ skipping 242 matching lines @@
       "//content/public/common",
       "//testing/gtest",
       "//third_party/WebKit/public:blink",
       "//ui/base",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/gl",
     ]
   }
 }