Add GrShaderFlags enum

src/effects/gradients/SkGradientShader.cpp

Index: src/effects/gradients/SkGradientShader.cpp
diff --git a/src/effects/gradients/SkGradientShader.cpp b/src/effects/gradients/SkGradientShader.cpp
index 03ebfd657ba7b581811be2a5f120253672a6cc1c..7a4290332dfb3087185e475786c34fe8f4ddccb6 100644
--- a/src/effects/gradients/SkGradientShader.cpp
+++ b/src/effects/gradients/SkGradientShader.cpp
@@ -917,26 +917,26 @@ void GrGLGradientEffect::emitUniforms(GrGLSLUniformHandler* uniformHandler,
                                       const GrGradientEffect& ge) {
 
     if (SkGradientShaderBase::kTwo_GpuColorType == ge.getColorType()) { // 2 Color case
-        fColorStartUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorStartUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                     kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                     "GradientStartColor");
-        fColorEndUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorEndUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                   kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                   "GradientEndColor");
 
     } else if (SkGradientShaderBase::kThree_GpuColorType == ge.getColorType()) { // 3 Color Case
-        fColorStartUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorStartUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                     kVec4f_GrSLType,  kDefault_GrSLPrecision,
                                                     "GradientStartColor");
-        fColorMidUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorMidUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                   kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                   "GradientMidColor");
-        fColorEndUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fColorEndUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                   kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                   "GradientEndColor");
 
     } else { // if not a fast case
-        fFSYUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fFSYUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                              kFloat_GrSLType, kDefault_GrSLPrecision,
                                              "GradientYCoordFS");
     }