Converted InterfaceBlock name to string_view

Change-Id: I1d64165b43bc956d0f965fe55f29eebb37a8dbd6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433002
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
7 files changed