Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.

Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/UnreachableBlockElim.cpp

@@ -40,7 +40,7 @@
 using namespace llvm;
 
 namespace {
-  class VISIBILITY_HIDDEN UnreachableBlockElim : public FunctionPass {
+  class UnreachableBlockElim : public FunctionPass {
     virtual bool runOnFunction(Function &F);
   public:
     static char ID; // Pass identification, replacement for typeid
@@ -95,8 +95,7 @@ bool UnreachableBlockElim::runOnFunction(Function &F) {
 
 
 namespace {
-  class VISIBILITY_HIDDEN UnreachableMachineBlockElim :
-        public MachineFunctionPass {
+  class UnreachableMachineBlockElim : public MachineFunctionPass {
     virtual bool runOnMachineFunction(MachineFunction &F);
     virtual void getAnalysisUsage(AnalysisUsage &AU) const;
     MachineModuleInfo *MMI;