Use llvm::is_contained. NFC

llvm-svn: 353635
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 0a89e2c..eb03e6e 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1575,8 +1575,7 @@
 
   // We want to show cc1-only options only when clang is invoked with -cc1 or
   // -Xclang.
-  if (std::find(Flags.begin(), Flags.end(), "-Xclang") != Flags.end() ||
-      std::find(Flags.begin(), Flags.end(), "-cc1") != Flags.end())
+  if (llvm::is_contained(Flags, "-Xclang") || llvm::is_contained(Flags, "-cc1"))
     DisableFlags &= ~options::NoDriverOption;
 
   StringRef Cur;