GitLab

This change wires up the TelemetryLog to the SystemDataProvider so that
updates are pushed to the log whenever new information is fetched. This
change also adds the SessionLogController to DiagnosticsManager so that
it is instantiated whenever the app is opened.

Bug: 1128204
Change-Id: I7974bbece2e40da9fe5cef1d6db1a32720276033
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2632871Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Bailey Berro <baileyberro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845337}