Replace path count with the read failure line number
Replace path count with the read failure line number

Make it easier to figure out READ_FAILURE is reporting a problem.

Bug: chromium:1287356
Change-Id: I3962932aed5c55efc2ded941cf218e5a8e75e972
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/539044
Commit-Queue: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>
Reviewed-by: Ben Wagner <53965154ffeecc4a10886eab9259e95965f2979a@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia