Rename Font::typeface with baseTypeface

This is a groundwork of switching to getAdjustedTypeface.
The Font::typeface should not be accessed except for accessing
font attribute, e.g. file path. For shaping or drawing,
Font::getAdjustedTypeface should be used.

Bug: 281769620
Test: N/A
Change-Id: I24807347b65b7a56573e7fa4ee7b78c015f470f5
11 files changed