Make addUniform take a precision

src/gpu/effects/GrYUVtoRGBEffect.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 "GrYUVtoRGBEffect.h"
 
 #include "GrCoordTransform.h"
@@ skipping 30 matching lines @@
         virtual void emitCode(GrGLFPBuilder* builder,
                               const GrFragmentProcessor&,
                               const char* outputColor,
                               const char* inputColor,
                               const TransformedCoordsArray& coords,
                               const TextureSamplerArray& samplers) SK_OVERRIDE {
             GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
 
             const char* yuvMatrix   = NULL;
             fMatrixUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
-                                             kMat44f_GrSLType, "YUVMatrix",
-                                             &yuvMatrix);
+                                             kMat44f_GrSLType, kDefault_GrSLPrecision,
+                                             "YUVMatrix", &yuvMatrix);
             fsBuilder->codeAppendf("\t%s = vec4(\n\t\t", outputColor);
             fsBuilder->appendTextureLookup(samplers[0], coords[0].c_str(), coords[0].getType());
             fsBuilder->codeAppend(".r,\n\t\t");
             fsBuilder->appendTextureLookup(samplers[1], coords[0].c_str(), coords[0].getType());
             fsBuilder->codeAppend(".r,\n\t\t");
             fsBuilder->appendTextureLookup(samplers[2], coords[0].c_str(), coords[0].getType());
             fsBuilder->codeAppendf(".r,\n\t\t1.0) * %s;\n", yuvMatrix);
         }
 
         virtual void setData(const GrGLProgramDataManager& pdman,
@@ skipping 72 matching lines @@
     0.0f,    0.0f,    0.0f,    1.0};
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrFragmentProcessor*
 GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vTexture,
                          SkYUVColorSpace colorSpace) {
     return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture, colorSpace);
 }