add portable and canonical font support for DM

gm/fontscaler.cpp

Index: gm/fontscaler.cpp
diff --git a/gm/fontscaler.cpp b/gm/fontscaler.cpp
index 8a97e6997064b03ff343e31a21db5c18c134468f..8aef8f0ebe37798099dc48083b131731ccaa0b74 100644
--- a/gm/fontscaler.cpp
+++ b/gm/fontscaler.cpp
@@ -47,7 +47,7 @@ protected:
         //With freetype the default (normal hinting) can be really ugly.
         //Most distros now set slight (vertical hinting only) in any event.
         paint.setHinting(SkPaint::kSlight_Hinting);
-        SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal)));
+        sk_tool_utils::set_portable_typeface(&paint, "Times Roman", SkTypeface::kNormal);
 
         const char* text = "Hamburgefons ooo mmm";
         const size_t textLen = strlen(text);