rename portable_typeface_always to portable_typeface

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1257773002
diff --git a/gm/arithmode.cpp b/gm/arithmode.cpp
index c58b14e..4b81944 100644
--- a/gm/arithmode.cpp
+++ b/gm/arithmode.cpp
@@ -58,7 +58,7 @@
     SkPaint paint;
     paint.setTextSize(SkIntToScalar(24));
     paint.setAntiAlias(true);
-    sk_tool_utils::set_portable_typeface_always(&paint);
+    sk_tool_utils::set_portable_typeface(&paint);
     for (int i = 0; i < 4; ++i) {
         SkString str;
         str.appendScalar(k[i]);