Add GrShaderFlags enum

src/gpu/effects/GrConstColorProcessor.cpp

Index: src/gpu/effects/GrConstColorProcessor.cpp
diff --git a/src/gpu/effects/GrConstColorProcessor.cpp b/src/gpu/effects/GrConstColorProcessor.cpp
index 7544b7b64ab7d6a51725da3e41144a634a144686..52108e5780b6d1a3f825c65ea0da56a79fab1149 100644
--- a/src/gpu/effects/GrConstColorProcessor.cpp
+++ b/src/gpu/effects/GrConstColorProcessor.cpp
@@ -19,7 +19,7 @@ public:
     void emitCode(EmitArgs& args) override {
         GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
         const char* colorUni;
-        fColorUniform = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorUniform = args.fUniformHandler->addUniform(kFragment_GrShaderFlag,
                                                          kVec4f_GrSLType, kMedium_GrSLPrecision,
                                                          "constantColor",
                                                          &colorUni);