Add another test_macros.h include I missed to tuple.by.type.pass.cpp

llvm-svn: 318830
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 63db89ff69d7ab686be2d8eeea7c565739bf7502
1 file changed