Some GrGLShaderBuilder cleanup

Review URL: https://codereview.appspot.com/6500043/



git-svn-id: http://skia.googlecode.com/svn/trunk@5322 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrSingleTextureEffect.cpp b/src/gpu/effects/GrSingleTextureEffect.cpp
index e1856c9..42a8bf9 100644
--- a/src/gpu/effects/GrSingleTextureEffect.cpp
+++ b/src/gpu/effects/GrSingleTextureEffect.cpp
@@ -23,7 +23,7 @@
                         const char* outputColor,
                         const char* inputColor,
                         const char* samplerName) SK_OVERRIDE {
-        builder->emitDefaultFetch(outputColor, samplerName);
+        builder->emitTextureLookupAndModulate(outputColor, samplerName);
     }
 
     static inline StageKey GenKey(const GrCustomStage&, const GrGLCaps&) { return 0; }