Revert of removing GrDrawEffect (patchset #4 id:60001 of https://codereview.chromium.org/571163002/)

Reason for revert:
reverting to unblock another revert

Original issue's description:
> removing GrDrawEffect
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/8ddbe8b9366c8c59c4fb55f01f253de8a0b37d6e

R=bsalomon@google.com
TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: joshualitt@chromium.org

Review URL: https://codereview.chromium.org/577593003
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index 7871920..fe55ce9 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -15,12 +15,12 @@
 
 class GrGLSimpleTextureEffect : public GrGLEffect {
 public:
-    GrGLSimpleTextureEffect(const GrBackendEffectFactory& factory, const GrEffect&)
+    GrGLSimpleTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
         : INHERITED (factory) {
     }
 
     virtual void emitCode(GrGLProgramBuilder* builder,
-                          const GrEffect& effect,
+                          const GrDrawEffect& drawEffect,
                           const GrEffectKey& key,
                           const char* outputColor,
                           const char* inputColor,