Use uint16 for port numbers more pervasively.

extensions/browser/api/socket/udp_socket.h

Index: extensions/browser/api/socket/udp_socket.h
diff --git a/extensions/browser/api/socket/udp_socket.h b/extensions/browser/api/socket/udp_socket.h
index 7a51131ddb8cf3fe6ac00ada847f5dfd1d5fff0f..316996033d4d473e481ab6bef3e7db2f6da0fdcc 100644
--- a/extensions/browser/api/socket/udp_socket.h
+++ b/extensions/browser/api/socket/udp_socket.h
@@ -19,16 +19,16 @@ class UDPSocket : public Socket {
   ~UDPSocket() override;
 
   void Connect(const std::string& address,
-               int port,
+               uint16 port,
                const CompletionCallback& callback) override;
   void Disconnect() override;
-  int Bind(const std::string& address, int port) override;
+  int Bind(const std::string& address, uint16 port) override;
   void Read(int count, const ReadCompletionCallback& callback) override;
   void RecvFrom(int count, const RecvFromCompletionCallback& callback) override;
   void SendTo(scoped_refptr<net::IOBuffer> io_buffer,
               int byte_count,
               const std::string& address,
-              int port,
+              uint16 port,
               const CompletionCallback& callback) override;
 
   bool IsConnected() override;