SkTypeface::MakeFromName to take SkFontStyle.

SkTypeface::MakeFromName currently takes SkTypeface::Style,
which is quite limited. This starts the transition to this
function taking SkFontStyle instead.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1818043002

TBR=reed
He said it sounded like a good idea.

Review-Url: https://codereview.chromium.org/1818043002
diff --git a/gm/textblob.cpp b/gm/textblob.cpp
index 525cfd2..2ac7d27 100644
--- a/gm/textblob.cpp
+++ b/gm/textblob.cpp
@@ -72,7 +72,7 @@
 
 protected:
     void onOnceBeforeDraw() override {
-        fTypeface = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kNormal);
+        fTypeface = sk_tool_utils::create_portable_typeface("serif", SkFontStyle());
         SkPaint p;
         p.setTypeface(fTypeface);
         size_t txtLen = strlen(fText);