Reland "Remove old references to SampleApp"

This reverts commit 3ff2b200573354c83bbb52ff2f5f760eb481596e.

Reason for revert: Infra fires are out.

Original change's description:
> Revert "Remove old references to SampleApp"
> 
> This reverts commit 1c477fc263cf37c27cd92740d9328445420a926d.
> 
> Reason for revert: Botpocalypse.
> Original change's description:
> > Remove old references to SampleApp
> > 
> > Docs-Preview: https://skia.org/?cl=135570
> > Change-Id: I330ffa964c2d90ca8d3cd844aabcd8616ccd0540
> > Reviewed-on: https://skia-review.googlesource.com/135570
> > Reviewed-by: Cary Clark <caryclark@google.com>
> > Commit-Queue: Brian Osman <brianosman@google.com>
> 
> TBR=halcanary@google.com,brianosman@google.com,caryclark@google.com
> 
> Change-Id: I514e2c7bca8a1ebd311593573a94e8a078695785
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/135600
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>

TBR=halcanary@google.com,brianosman@google.com,caryclark@google.com

Change-Id: I660482ef32acecf5b1bf24d2dec919bc68fde97e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/135660
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
7 files changed