gn build: Merge r359174

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@359188 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/gn/secondary/llvm/unittests/Support/BUILD.gn b/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
index 527c7fc..b283b09 100644
--- a/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
+++ b/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
@@ -44,6 +44,7 @@
     "LockFileManagerTest.cpp",
     "MD5Test.cpp",
     "ManagedStatic.cpp",
+    "MatchersTest.cpp",
     "MathExtrasTest.cpp",
     "MemoryBufferTest.cpp",
     "MemoryTest.cpp",