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/Transforms/IPO/InlineSimple.cpp b/llvm/lib/Transforms/IPO/InlineSimple.cpp
index b1c643b..6bbf624 100644
--- a/llvm/lib/Transforms/IPO/InlineSimple.cpp
+++ b/llvm/lib/Transforms/IPO/InlineSimple.cpp
@@ -29,7 +29,7 @@
 
 namespace {
 
-  class VISIBILITY_HIDDEN SimpleInliner : public Inliner {
+  class SimpleInliner : public Inliner {
     // Functions that are never inlined
     SmallPtrSet<const Function*, 16> NeverInline; 
     InlineCostAnalyzer CA;