make SetReceiveBufferSize and SetSendBufferSize return net error codes (instead of bools)

remoting/jingle_glue/chromium_socket_factory.cc

Index: remoting/jingle_glue/chromium_socket_factory.cc
diff --git a/remoting/jingle_glue/chromium_socket_factory.cc b/remoting/jingle_glue/chromium_socket_factory.cc
index 24cda6ebe78ba84f75abd2f3457cbffc31daf627..c88833fa9bc167260254001c38a6d7ede0e63386 100644
--- a/remoting/jingle_glue/chromium_socket_factory.cc
+++ b/remoting/jingle_glue/chromium_socket_factory.cc
@@ -225,13 +225,13 @@ int UdpPacketSocket::SetOption(talk_base::Socket::Option option, int value) {
       return -1;
 
     case talk_base::Socket::OPT_RCVBUF: {
-      bool success = socket_->SetReceiveBufferSize(value);
-      return success ? 0 : -1;
+      int net_error = socket_->SetReceiveBufferSize(value);
+      return (net_error == net::OK) ? 0 : -1;
     }
 
     case talk_base::Socket::OPT_SNDBUF: {
-      bool success = socket_->SetSendBufferSize(value);
-      return success ? 0 : -1;
+      int net_error = socket_->SetSendBufferSize(value);
+      return (net_error == net::OK) ? 0 : -1;
     }
 
     case talk_base::Socket::OPT_NODELAY: