Using 64-bit timestamp in webrtc/p2p

webrtc/p2p/base/relayserver.h

Index: webrtc/p2p/base/relayserver.h
diff --git a/webrtc/p2p/base/relayserver.h b/webrtc/p2p/base/relayserver.h
index f1109f1ce48e1a4dce52c9c5e0a4a6d0e754e082..7ee71d9f21693b0365644f2f6dc11034573e47d8 100644
--- a/webrtc/p2p/base/relayserver.h
+++ b/webrtc/p2p/base/relayserver.h
@@ -184,11 +184,11 @@ class RelayServerBinding : public rtc::MessageHandler {
   RelayServerBinding(RelayServer* server,
                      const std::string& username,
                      const std::string& password,
-                     uint32_t lifetime);
+                     int lifetime);
   virtual ~RelayServerBinding();
 
   RelayServer* server() { return server_; }
-  uint32_t lifetime() { return lifetime_; }
+  int lifetime() { return lifetime_; }
   const std::string& username() { return username_; }
   const std::string& password() { return password_; }
   const std::string& magic_cookie() { return magic_cookie_; }
@@ -226,8 +226,8 @@ class RelayServerBinding : public rtc::MessageHandler {
   std::vector<RelayServerConnection*> internal_connections_;
   std::vector<RelayServerConnection*> external_connections_;
 
-  uint32_t lifetime_;
-  uint32_t last_used_;
+  int lifetime_;
+  int64_t last_used_;
   // TODO: bandwidth
 };