Reland "Improve precision and speed of oval rendering."
Reland "Improve precision and speed of oval rendering."

This reverts commit cd2253d07f246b8da2f88cde39a6adab5e5021de.

Reason for revert: Tweaks for Adreno.

Original change's description:
> 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 <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>
> 
> TBR=509afb0bfbb23ecaaf1fb3323209f531b45e75a6@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 <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>
> Commit-Queue: Jim Van Verth <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>

TBR=509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com,brianosman@google.com

Change-Id: I710b79376dfd75b718fd867b149b28faebd1946a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/138180
Reviewed-by: Jim Van Verth <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>
Commit-Queue: Jim Van Verth <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>

aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,rubenvb/skia,google/skia,rubenvb/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,rubenvb/skia,google/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,rubenvb/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,rubenvb/skia,rubenvb/skia,google/skia,google/skia,google/skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,HalCanary/skia-hc,HalCanary/skia-hc,aosp-mirror/platform_external_skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,rubenvb/skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia