crosperf: Update path search for chrome sources

Chrome source location has recently changed and path search in crosperf
is updated accordingly.

BUG=None
TEST=run crosperf after repo sync and ebuild prepare of chrome.

Change-Id: I715b3a9bf4892a993181b0be5864de94f651afe2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2446895
Commit-Queue: Denis Nikitin <denik@chromium.org>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Denis Nikitin <denik@chromium.org>
Auto-Submit: Denis Nikitin <denik@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
1 file changed