make pixelsnap textblob* etc gm portable

gm/samplerstress.cpp

Index: gm/samplerstress.cpp
diff --git a/gm/samplerstress.cpp b/gm/samplerstress.cpp
index ec072708cbcf2695a05758b5018e18b4adaae994..38b94bf03a81c665d0a67c097284e2d365f4c4a3 100644
--- a/gm/samplerstress.cpp
+++ b/gm/samplerstress.cpp
@@ -101,6 +101,7 @@ protected:
         paint.setTextSize(72);
         paint.setShader(fShader.get());
         paint.setMaskFilter(fMaskFilter.get());
+        sk_tool_utils::set_portable_typeface(&paint);
 
         SkRect temp;
         temp.set(SkIntToScalar(115),
@@ -131,7 +132,7 @@ protected:
                          SkIntToScalar(100), SkIntToScalar(100),
                          paint2);
 
-        paint2.setColor(SK_ColorGRAY);
+        paint2.setColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
 
         canvas->drawPath(path, paint2);
     }