Collect all ConnectionAttempts from both sockets in TransportConnectJob.

jingle/glue/proxy_resolving_client_socket.h

Index: jingle/glue/proxy_resolving_client_socket.h
diff --git a/jingle/glue/proxy_resolving_client_socket.h b/jingle/glue/proxy_resolving_client_socket.h
index 696a097d68fadba542a49396b289d7f0ff3fcae7..e8f22ceb68713ba60a1fbc39acbaccdaf84ac1cc 100644
--- a/jingle/glue/proxy_resolving_client_socket.h
+++ b/jingle/glue/proxy_resolving_client_socket.h
@@ -70,6 +70,10 @@ class ProxyResolvingClientSocket : public net::StreamSocket {
   bool WasNpnNegotiated() const override;
   net::NextProto GetNegotiatedProtocol() const override;
   bool GetSSLInfo(net::SSLInfo* ssl_info) override;
+  void GetConnectionAttempts(net::ConnectionAttempts* out) const override;
+  void ClearConnectionAttempts() override {}
+  void AddConnectionAttempts(const net::ConnectionAttempts& attempts) override {
+  }
 
  private:
   // Proxy resolution and connection functions.