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This detects framework version change and invalidate icons for installed
packages.
This also fixes flakiness in unit test when installing app icons and
deleting invalidated icons could happen from different concurrent threads.

TEST=Locally, unit test
BUG=959028

Change-Id: Ifb2b9a857a07275df401fc9df988cf931219ba4a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1610845Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Commit-Queue: Yury Khmel <khmel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659752}