Add ChromeOS Test/Perf jobs and recipe changes

Minor cleanup of left over Tab3 tests.

Bug: skia:6442
Change-Id: I03bb4a034101a2773619abd2be7a300a70f6ac3d
Reviewed-on: https://skia-review.googlesource.com/11414
Reviewed-by: Eric Boren <borenet@google.com>
15 files changed