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/GrConvolutionEffect.cpp b/src/gpu/effects/GrConvolutionEffect.cpp
index aad7c87..14ba4d7 100644
--- a/src/gpu/effects/GrConvolutionEffect.cpp
+++ b/src/gpu/effects/GrConvolutionEffect.cpp
@@ -211,10 +211,10 @@
 
 GR_DEFINE_EFFECT_TEST(GrConvolutionEffect);
 
-GrEffectRef* GrConvolutionEffect::TestCreate(SkRandom* random,
-                                             GrContext*,
-                                             const GrDrawTargetCaps&,
-                                             GrTexture* textures[]) {
+GrEffect* GrConvolutionEffect::TestCreate(SkRandom* random,
+                                          GrContext*,
+                                          const GrDrawTargetCaps&,
+                                          GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
                                       GrEffectUnitTest::kAlphaTextureIdx;
     Direction dir = random->nextBool() ? kX_Direction : kY_Direction;