Merge pull request #4442 from Carreau/fix-oir

finish object_info_request/object_info rename in tooltip

docs/source/whatsnew/pr/object_info_js.rst

@@ -0,0 +1,2 b''
+* ``object_info_request`` as been replaced by ``object_info`` for consistency in the javascript API.
+  ``object_info`` as a simpler interface to register callback that is incompatible with ``object_info_request``.

IPython/html/static/notebook/js/tooltip.js

@@ -221,11 +221,9 b' var IPython = (function (IPython) {'
     };
 
     Tooltip.prototype._request_tooltip = function (cell, line) {
-        var callbacks = { shell : {
-            reply : $.proxy(this._show, this)
-        }};
+        var callbacks = $.proxy(this._show, this);
         var oir_token = this.extract_oir_token(line);
-        var msg_id = cell.kernel.object_info_request(oir_token, callbacks);
+        var msg_id = cell.kernel.object_info(oir_token, callbacks);
     };
 
     // make an imediate completion request