Make GrGLGradientEffect derive directly from GrGLEffect.
Review URL: https://codereview.appspot.com/6784053

git-svn-id: http://skia.googlecode.com/svn/branches/gpu_dev@6163 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkGradientShader.cpp b/src/effects/gradients/SkGradientShader.cpp
index 04e3019..d71195c 100644
--- a/src/effects/gradients/SkGradientShader.cpp
+++ b/src/effects/gradients/SkGradientShader.cpp
@@ -682,7 +682,7 @@
 
 GrGLGradientEffect::~GrGLGradientEffect() { }
 
-void GrGLGradientEffect::setupVariables(GrGLShaderBuilder* builder) {
+void GrGLGradientEffect::emitYCoordUniform(GrGLShaderBuilder* builder) {
     fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType,
                                   kFloat_GrSLType, "GradientYCoordFS");
 }