Revert "Convert the CPU path case to use prepareForDrawing"

This reverts commit 8be917af4313f6021b9b8e5d2b3f4d5712967aa9.

Reason for revert: Causes layout tests to draw problem

Original change's description:
> Convert the CPU path case to use prepareForDrawing
> 
> Change-Id: I5babfc7f1fa9784d81896d5c036e3b50c2af8ca0
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207760
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Commit-Queue: Herb Derby <herb@google.com>

TBR=bungeman@google.com,herb@google.com

Change-Id: I8ec1e8fed49571cc70b0acac750cbbf302f551fe
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207886
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
1 file changed