Add GrShaderFlags enum

src/gpu/glsl/GrGLSLXferProcessor.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "glsl/GrGLSLXferProcessor.h"
 
 #include "GrXferProcessor.h"
@@ skipping 18 matching lines @@
             // We don't think any shaders actually output negative coverage, but just as a safety
             // check for floating point precision errors we compare with <= here
             fragBuilder->codeAppendf("if (all(lessThanEqual(%s, vec4(0)))) {"
                                      "    discard;"
                                      "}", args.fInputCoverage);
         }
 
         const char* dstTopLeftName;
         const char* dstCoordScaleName;
 
-        fDstTopLeftUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fDstTopLeftUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                     kVec2f_GrSLType,
                                                     kDefault_GrSLPrecision,
                                                     "DstTextureUpperLeft",
                                                     &dstTopLeftName);
-        fDstScaleUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+        fDstScaleUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                                   kVec2f_GrSLType,
                                                   kDefault_GrSLPrecision,
                                                   "DstTextureCoordScale",
                                                   &dstCoordScaleName);
         const char* fragPos = fragBuilder->fragmentPosition();
 
         fragBuilder->codeAppend("// Read color from copy of the destination.\n");
         fragBuilder->codeAppendf("vec2 _dstTexCoord = (%s.xy - %s) * %s;",
                                  fragPos, dstTopLeftName, dstCoordScaleName);
 
@@ skipping 44 matching lines @@
             fragBuilder->codeAppendf("%s *= %s;", outColor, srcCoverage);
             fragBuilder->codeAppendf("%s = %s;", outColorSecondary, srcCoverage);
         } else {
             fragBuilder->codeAppendf("%s = vec4(1.0);", outColorSecondary);
         }
     } else if (srcCoverage) {
         fragBuilder->codeAppendf("%s = %s * %s + (vec4(1.0) - %s) * %s;",
                                  outColor, srcCoverage, outColor, srcCoverage, dstColor);
     }
 }