Add function for logging blend info on XP.

src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp

Index: src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp
diff --git a/src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp b/src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp
index 8fcb0b972e583b8508fe9eaf41ff5623678fe045..044752f7a538b2fc68f5b53430f31a197e81afb9 100644
--- a/src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp
+++ b/src/gpu/gl/builders/GrGLFragmentShaderBuilder.cpp
@@ -74,7 +74,7 @@ static const char* specific_layout_qualifier_name(GrBlendEquation equation) {
     GR_STATIC_ASSERT(13 == kHSLColor_GrBlendEquation - kFirstAdvancedGrBlendEquation);
     GR_STATIC_ASSERT(14 == kHSLLuminosity_GrBlendEquation - kFirstAdvancedGrBlendEquation);
     GR_STATIC_ASSERT(SK_ARRAY_COUNT(kLayoutQualifierNames) ==
-                     kTotalGrBlendEquationCount - kFirstAdvancedGrBlendEquation);
+                     kGrBlendEquationCnt - kFirstAdvancedGrBlendEquation);
 }
 
 GrGLFragmentShaderBuilder::DstReadKey