Make //content responsible for generating notification Ids

content/browser/notifications/notification_database_data_unittest.cc

 // Copyright 2015 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/strings/nullable_string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "content/browser/notifications/notification_database_data.pb.h"
 #include "content/browser/notifications/notification_database_data_conversions.h"
 #include "content/public/browser/notification_database_data.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/modules/notifications/WebNotificationConstants.h"
 
 namespace content {
 
-const int64_t kNotificationId = 42;
+const char kNotificationId[] = "my-notification";
 const int64_t kServiceWorkerRegistrationId = 9001;
 
 const PlatformNotificationActionType kNotificationActionType =
     PLATFORM_NOTIFICATION_ACTION_TYPE_TEXT;
 const char kOrigin[] = "https://example.com/";
 const char kNotificationTitle[] = "My Notification";
 const char kNotificationLang[] = "nl";
 const char kNotificationBody[] = "Hello, world!";
 const char kNotificationTag[] = "my_tag";
 const char kNotificationImageUrl[] = "https://example.com/image.jpg";
@@ skipping 172 matching lines @@
       SerializeNotificationDatabaseData(database_data, &serialized_data));
 
   NotificationDatabaseData copied_data;
   ASSERT_TRUE(
       DeserializeNotificationDatabaseData(serialized_data, &copied_data));
 
   EXPECT_TRUE(copied_data.notification_data.actions[0].placeholder.is_null());
 }
 
 }  // namespace content