Add testing of Runtime Shaders to PaintParamsKeyTest

This completes Precompilation testing of the SkShader-derived Skia classes.

Bug: b/259548724
Change-Id: I543f679f04a3a4c2a22ba30f54d01ac586bce459
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/856136
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed