ProfileSummaryInfoTest.cpp - fix implicit CommandLine.h dependency. NFC.

ProfileSummaryInfoTest references cl::opt but don't include CommandLine.h.

llvm/unittests/Analysis/ProfileSummaryInfoTest.cpp

@@ -17,6 +17,7 @@
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/IR/Module.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/FormatVariadic.h"
 #include "llvm/Support/SourceMgr.h"