[clang-tidy] Don't emit google-runtime-references warning for functions defined in macros.

Summary:
The macro are usually defined in the common/base headers which are hard
for normal users to modify it.

Reviewers: gribozavr, alexfh

Subscribers: xazax.hun, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66631

llvm-svn: 369739