json_schema_compiler: Use std::vector<char> for binary values.

extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc

Index: extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc
diff --git a/extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc b/extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc
index 1f619a111240efecfb148a58a42f0087ca22c874..0d52ae5937d2f13e0d0c15bd79a608b540819067 100644
--- a/extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc
+++ b/extensions/browser/api/sockets_tcp/tcp_socket_event_dispatcher.cc
@@ -128,7 +128,7 @@ void TCPSocketEventDispatcher::ReadCallback(
     // Dispatch "onReceive" event.
     sockets_tcp::ReceiveInfo receive_info;
     receive_info.socket_id = params.socket_id;
-    receive_info.data = std::string(io_buffer->data(), bytes_read);
+    receive_info.data.assign(io_buffer->data(), io_buffer->data() + bytes_read);
     scoped_ptr<base::ListValue> args =
         sockets_tcp::OnReceive::Create(receive_info);
     scoped_ptr<Event> event(