Convert //ppapi to use std::unique_ptr

ppapi/proxy/udp_socket_filter.h

Index: ppapi/proxy/udp_socket_filter.h
diff --git a/ppapi/proxy/udp_socket_filter.h b/ppapi/proxy/udp_socket_filter.h
index 4aa3e5cde83b23d4f0fca63834b011043d1b04b4..e10ca3a886d8e561ec4f57aeff77af8959f8a3c6 100644
--- a/ppapi/proxy/udp_socket_filter.h
+++ b/ppapi/proxy/udp_socket_filter.h
@@ -8,6 +8,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <queue>
 #include <string>
 
@@ -130,7 +131,7 @@ class PPAPI_PROXY_EXPORT UDPSocketFilter : public ResourceMessageFilter {
   // 1 ppapi::ProxyLock
   // \-->2 Filter lock_
   mutable base::Lock lock_;
-  base::ScopedPtrHashMap<PP_Resource, scoped_ptr<RecvQueue>> queues_;
+  base::ScopedPtrHashMap<PP_Resource, std::unique_ptr<RecvQueue>> queues_;
 };
 
 }  // namespace proxy