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We want to investigate why the force installed extensions fail to
install with error CRX_HEADER_INVALID. This CL adds UMA statistics
to record whether the extension is downloaded from cache or not when
extension fails with CRX_HEADER_INVALID error to get more details
about it.

New histogram added:
"Extensions.ForceInstalledFailureWithCrxHeaderInvalidIsFromCache"

Bug: b/170087934
Change-Id: I843e4a1c2cce87b3975e2ad426f9b8177a744878
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2460734Reviewed-by: Saurabh Nijhara <snijhara@google.com>
Reviewed-by: Brian White <bcwhite@chromium.org>
Reviewed-by: Oleg Davydov <burunduk@chromium.org>
Commit-Queue: Swapnil Gupta <swapnilgupta@google.com>
Cr-Commit-Position: refs/heads/master@{#816786}