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It fails an assert in component updater service when the recovery component is registered.
https://chromium-review.googlesource.com/1787402 introduced Omaha-style app ids. However,
the recovery component code was not modify to use appids, and the it fails to register
because the member update_client::CrxComponent::app_id is not set.

TBR=waffles
BUG=1015073,1001126

Change-Id: If5f0c1a7ba2778b5183156d64fd57d745dc099ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865552Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Sorin Jianu <sorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706931}