Fix Chromebook output step and skpbench

They pull stuff of using scp, which does not perform well
if a directory does not exist.

Skpbench also needs to be updated to use new adb.

Bug: skia:
NOTRY=true
Change-Id: I1e9f2dbddaab05e1aeb4d71d97f1e6e4bfdd299a
Reviewed-on: https://skia-review.googlesource.com/59081
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
24 files changed