Move shader precision modifier check onto GLSLCaps

src/gpu/effects/GrConfigConversionEffect.cpp

Index: src/gpu/effects/GrConfigConversionEffect.cpp
diff --git a/src/gpu/effects/GrConfigConversionEffect.cpp b/src/gpu/effects/GrConfigConversionEffect.cpp
index ec418d0000e27e42e4b8dd8c63f28217d62347ae..d6f9eec3808c7f9bf75ebc556561fb2ffb6a3f95 100644
--- a/src/gpu/effects/GrConfigConversionEffect.cpp
+++ b/src/gpu/effects/GrConfigConversionEffect.cpp
@@ -27,7 +27,7 @@ public:
         // Using highp for GLES here in order to avoid some precision issues on specific GPUs.
         GrGLShaderVar tmpVar("tmpColor", kVec4f_GrSLType, 0, kHigh_GrSLPrecision);
         SkString tmpDecl;
-        tmpVar.appendDecl(args.fBuilder->ctxInfo(), &tmpDecl);
+        tmpVar.appendDecl(args.fBuilder->glslCaps(), &tmpDecl);
 
         GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();