[WebAssembly] Add test expectations for gcc C++ tests (gcc/testsuite/g++.dg)

Differential Revision: https://reviews.llvm.org/D42226

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322915 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed