Reland "use colorspace steps to determine legacy blits"

This reverts commit c945f0e31a5396a4ff6347d45a908b529233ed0c.

Reason for revert: looks like this did not help

Original change's description:
> Revert "use colorspace steps to determine legacy blits"
> 
> This reverts commit 09198525261aa5152c2183158315d81176776d99.
> 
> Reason for revert: speculative: unblock android roll
> 
> Original change's description:
> > use colorspace steps to determine legacy blits
> > 
> > Bug: skia:8793
> > Change-Id: I1de4bde25f7dcb12175733a3213c43f92410dc4a
> > Reviewed-on: https://skia-review.googlesource.com/c/196647
> > Commit-Queue: Mike Reed <reed@google.com>
> > Reviewed-by: Mike Klein <mtklein@google.com>
> > Reviewed-by: Brian Osman <brianosman@google.com>
> 
> TBR=mtklein@google.com,brianosman@google.com,reed@google.com
> 
> Change-Id: I79a21df9a3c3a9f3127f57131feff0f3e417e642
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:8793
> Reviewed-on: https://skia-review.googlesource.com/c/196774
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=mtklein@google.com,brianosman@google.com,reed@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:8793
Change-Id: I2b70c6e3763bf27112b54ed0d0611a6addc755b9
Reviewed-on: https://skia-review.googlesource.com/c/196981
Reviewed-by: Mike Reed <reed@google.com>
3 files changed