Notification: Use new API for media capture and sync notification.

This CL converts media capture and sync notification to use new
ChromeNotificationBuilder API which will automatically tracks the
following metrics to compute the CTR.

Mobile.SystemNotification.Action.Click
Mobile.SystemNotification.Content.Click
Mobile.SystemNotification.Dismiss


Bug: 941024,898269
Change-Id: I9804ccda81c4b97eb2e34f2dbcf015a82e2cb025
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1518597
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640556}