Rename ShaderType enum to ShaderVisibility

src/effects/SkTableColorFilter.cpp

Index: src/effects/SkTableColorFilter.cpp
diff --git a/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index cbcc6bc439365f0e18457add2e2cf916dd6c9842..bb72b82628e08ccad5b309bf4f406d0da19a307a 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -312,19 +312,19 @@ void GLColorTableEffect::emitCode(GrGLShaderBuilder* builder,
     }
 
     builder->fsCodeAppendf("\t\t%s.a = ", outputColor);
-    builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType, samplers[0], "vec2(coord.a, 0.125)");
+    builder->fsAppendTextureLookup(samplers[0], "vec2(coord.a, 0.125)");
     builder->fsCodeAppend(";\n");
 
     builder->fsCodeAppendf("\t\t%s.r = ", outputColor);
-    builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType, samplers[0], "vec2(coord.r, 0.375)");
+    builder->fsAppendTextureLookup(samplers[0], "vec2(coord.r, 0.375)");
     builder->fsCodeAppend(";\n");
 
     builder->fsCodeAppendf("\t\t%s.g = ", outputColor);
-    builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType, samplers[0], "vec2(coord.g, 0.625)");
+    builder->fsAppendTextureLookup(samplers[0], "vec2(coord.g, 0.625)");
     builder->fsCodeAppend(";\n");
 
     builder->fsCodeAppendf("\t\t%s.b = ", outputColor);
-    builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType, samplers[0], "vec2(coord.b, 0.875)");
+    builder->fsAppendTextureLookup(samplers[0], "vec2(coord.b, 0.875)");
     builder->fsCodeAppend(";\n");
 
     builder->fsCodeAppendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor);