Add #ifdefs to separate NaCl and non-NaCl PPAPI Proxy code.

ppapi/proxy/interface_list.h

Index: ppapi/proxy/interface_list.h
===================================================================
--- ppapi/proxy/interface_list.h	(revision 132566)
+++ ppapi/proxy/interface_list.h	(working copy)
@@ -52,11 +52,13 @@
 
   typedef std::map<std::string, InterfaceInfo> NameToInterfaceInfoMap;
 
+#if !defined(OS_NACL)
   // Registers the Flash-specific interfaces.
   //
   // TODO(brettw) these should be moved somewhere separately so we can compile
   // the proxy for NaCl without Flash interface support.
   void AddFlashInterfaces();
+#endif  // !defined(OS_NACL)
 
   void AddProxy(ApiID id, InterfaceProxy::Factory factory);