Move code into anonymous namespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145154 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 8c4c06f..9b99646 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -72,7 +72,7 @@
   cl::desc("Enable / disable ARM interworking (for debugging only)"),
   cl::init(true));
 
-namespace llvm {
+namespace {
   class ARMCCState : public CCState {
   public:
     ARMCCState(CallingConv::ID CC, bool isVarArg, MachineFunction &MF,