Add ENABLE_NATIVE_NOTIFICATIONS guard in browser_process_impl.h

The created_notification_bridge_ member variable is only used
when enable_native_notifications = true.

Bug: None
Change-Id: Iab1ff6864d9b600667c93178de24eda5eef656bd
Reviewed-on: https://chromium-review.googlesource.com/1015746
Reviewed-by: Yoshiki Iguchi <[email protected]>
Reviewed-by: Nico Weber <[email protected]>
Commit-Queue: Nico Weber <[email protected]>
Cr-Commit-Position: refs/heads/master@{#552102}
1 file changed