[PATCH] D70235: [clangd] Add isHeaderFile helper.

[Haojian Wu via Phabricator via cfe-commits]

hokein added a comment.

in case you miss this patch, I saw you have stamped the other patch depends on this patch, but this patch still needs approval.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70235/new/

https://reviews.llvm.org/D70235