discard SkRuntimeEffect builder in SkSLEffect to use lower level API
discard SkRuntimeEffect builder in SkSLEffect to use lower level API

Change-Id: I20bb5e6463e79bcdd56fd614d9936fdaf65aefcc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/471776
Commit-Queue: Jorge Betancourt <63f45fa27f6ebe96d0924e755262c906d4cb18db@google.com>
Reviewed-by: Florin Malita <a8262bf13ea8c26821e91ea9bca6740a77c96dcd@google.com>

aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia