Add RenderEffect support for Shaders as inputs

Added RenderEffect.createShader to handle creation
of RenderEffects using shaders as inputs that can be
chained with other RenderEffects

Fixes: 178536866
Test: Added example in HwAccelerationTest activity
Change-Id: I4d9791ad63f3057ffa528918ce2cd083986089e5
5 files changed