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.

llvm-svn: 85042
diff --git a/llvm/lib/Analysis/ProfileInfoLoaderPass.cpp b/llvm/lib/Analysis/ProfileInfoLoaderPass.cpp
index 89d90bc..50321ce 100644
--- a/llvm/lib/Analysis/ProfileInfoLoaderPass.cpp
+++ b/llvm/lib/Analysis/ProfileInfoLoaderPass.cpp
@@ -38,7 +38,7 @@
                     cl::desc("Profile file loaded by -profile-loader"));
 
 namespace {
-  class VISIBILITY_HIDDEN LoaderPass : public ModulePass, public ProfileInfo {
+  class LoaderPass : public ModulePass, public ProfileInfo {
     std::string Filename;
     std::set<Edge> SpanningTree;
     std::set<const BasicBlock*> BBisUnvisited;