Add PS 'all' weight name to scanFont.

src/ports/SkFontHost_FreeType.cpp

Index: src/ports/SkFontHost_FreeType.cpp
diff --git a/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index 5a4b75579bf4ef7b5b3d0264d39a9d1901c02be5..4b8345a94ccb2bf19c984e0ae665b171b7ad5627 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -1681,6 +1681,7 @@ bool SkTypeface_FreeType::Scanner::scanFont(
             int const weight;
         } commonWeights [] = {
             // There are probably more common names, but these are known to exist.
+            { "all", SkFontStyle::kNormal_Weight }, // Multiple Masters usually default to normal.
             { "black", SkFontStyle::kBlack_Weight },
             { "bold", SkFontStyle::kBold_Weight },
             { "book", (SkFontStyle::kNormal_Weight + SkFontStyle::kLight_Weight)/2 },