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/Transforms/Utils/LowerInvoke.cpp

@@ -61,7 +61,7 @@ static cl::opt<bool> ExpensiveEHSupport("enable-correct-eh-support",
  cl::desc("Make the -lowerinvoke pass insert expensive, but correct, EH code"));
 
 namespace {
-  class VISIBILITY_HIDDEN LowerInvoke : public FunctionPass {
+  class LowerInvoke : public FunctionPass {
     // Used for both models.
     Constant *WriteFn;
     Constant *AbortFn;