[recipes] Make ct_skps use binaries from a build task

Bug: skia:6473
Change-Id: I10a169dd47cb76839fd401254eaeb4c46b2ece8f
Reviewed-on: https://skia-review.googlesource.com/128549
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
20 files changed