Goodbye GrEffectRef.

Also, reworked some var names and comments around SkShader::asNewEffect.

R=robertphillips@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/374923002
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index 841561b..b5ad386 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -51,10 +51,10 @@
 
 GR_DEFINE_EFFECT_TEST(GrSimpleTextureEffect);
 
-GrEffectRef* GrSimpleTextureEffect::TestCreate(SkRandom* random,
-                                               GrContext*,
-                                               const GrDrawTargetCaps&,
-                                               GrTexture* textures[]) {
+GrEffect* GrSimpleTextureEffect::TestCreate(SkRandom* random,
+                                            GrContext*,
+                                            const GrDrawTargetCaps&,
+                                            GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
                                       GrEffectUnitTest::kAlphaTextureIdx;
     static const SkShader::TileMode kTileModes[] = {