Method that will be called on receipt of a DevTools protocol event.
|browser| is the originating browser instance. |function| is the
"function" value. |params| is the UTF8-encoded JSON "params" dictionary
value (which may be NULL). |params| is only valid for the scope of this
callback and should be copied if necessary. See the OnDevToolsMessage
documentation for additional details on |params| contents.
Method that will be called on receipt of a DevTools protocol event. |browser| is the originating browser instance. |function| is the "function" value. |params| is the UTF8-encoded JSON "params" dictionary value (which may be NULL). |params| is only valid for the scope of this callback and should be copied if necessary. See the OnDevToolsMessage documentation for additional details on |params| contents.