Automated commit: libchrome r1493950 uprev

Merge with upstream commit b2f8c6bfd1471d277ba470e97274648e3edf6e04

BUG=None
TEST=sudo emerge libchrome

Change-Id: Ib1bc3055fe53e619f54d0803bdf288b2d62e8987
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/6801757
Commit-Queue: ChromeOS Prod (Robot) <[email protected]>
Tested-by: ChromeOS Prod (Robot) <[email protected]>
Bot-Commit: ChromeOS Prod (Robot) <[email protected]>