Retain hints when subsetting for PDF.

There exist 'tricky' fonts which use bytecode hints to move all parts of
a glyph for legibility, not just to slightly tweak the outlines. Until
it is possible to detect these 'tricky' fonts, retain all font's
bytecode hints.

Bug: chromium:1010396
Change-Id: I4eaca967da1a853c8061a4997ce8b872a53fd2f1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/247298
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed