Comment 1 for bug 1581151

For Noto Sans font, it's just for the Sans Serif family. Still for Serif fonts, we still rely on other local font sets. The fallback settings in those fontconfig files should still be needed.

Japanese uses Chinese characters but with some variates. That's why a local font is preferred. Noto Sans provides all glyphs for different locale, which meets the needs. Just currently only Sans Serif is provided for Noto Sans.