Revert "Improve precision and speed of oval rendering."

This reverts commit 551dc3e911438afb7c0ab28b1060a9480a4debd3.

Reason for revert: Centers of ovals are dropping out on Adreno330

Original change's description:
> Improve precision and speed of oval rendering.
> 
> Reduces computations, and fixes some issues with large ovals.
> 
> Change-Id: I2a961f2115e4e5fcb756714dd7e45c7528ed679a
> Reviewed-on: https://skia-review.googlesource.com/136229
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Jim Van Verth <jvanverth@google.com>

TBR=jvanverth@google.com,brianosman@google.com

Change-Id: I704dcd591217f04cedb5b6c5c5ade3df928f8249
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/138040
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed