Added support for Chrome's gpu command buffer extension BindUniformLocation.

src/effects/gradients/SkTwoPointRadialGradient.cpp

Index: src/effects/gradients/SkTwoPointRadialGradient.cpp
diff --git a/src/effects/gradients/SkTwoPointRadialGradient.cpp b/src/effects/gradients/SkTwoPointRadialGradient.cpp
index 923ed1e6ba795449eb06429664e75066e65b92f5..207f3db65377bfc6a2aa206a6c000bdf62db37e9 100644
--- a/src/effects/gradients/SkTwoPointRadialGradient.cpp
+++ b/src/effects/gradients/SkTwoPointRadialGradient.cpp
@@ -638,7 +638,7 @@ void GrGLRadial2Gradient::setData(const GrGLUniformManager& uman,
             data.isPosRoot() ? 1.f : -1.f
         };
 
-        uman.set1fv(fParamUni, 0, 6, values);
+        uman.set1fv(fParamUni, 6, values);
         fCachedCenter = centerX1;
         fCachedRadius = radius0;
         fCachedPosRoot = data.isPosRoot();