Move scoped_nsobject from base/memory to base/mac.

base/mac/scoped_cftyperef.h

Index: base/mac/scoped_cftyperef.h
diff --git a/base/mac/scoped_cftyperef.h b/base/mac/scoped_cftyperef.h
index c6ca46a4f20f5a108cd92cb14761c16406ac98ac..f09fcbf3d7846192ec42b3a70310fc5167e89b98 100644
--- a/base/mac/scoped_cftyperef.h
+++ b/base/mac/scoped_cftyperef.h
@@ -12,7 +12,6 @@
 #include "base/memory/scoped_policy.h"
 
 namespace base {
-namespace mac {
 
 // ScopedCFTypeRef<> is patterned after scoped_ptr<>, but maintains ownership
 // of a CoreFoundation object: any object that can be represented as a
@@ -102,7 +101,12 @@ class ScopedCFTypeRef {
   CFT object_;
 };
 
+// TODO(thakis): Remove this once all clients use base::ScopedCFTypeRef
+// directly.
+namespace mac {
+using base::ScopedCFTypeRef;
 }  // namespace mac
+
 }  // namespace base
 
 #endif  // BASE_MAC_SCOPED_CFTYPEREF_H_