[clangd] Add highlighting for macro expansions.

Summary: https://github.com/clangd/clangd/issues/134

Reviewers: hokein, ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66995

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@370482 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed