Shared components used by Firefox and other Mozilla software, including handling of Web content; Gecko, HTML, CSS, layout, DOM, scripts, images, networking, etc. Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. (More info)
Core inter-process communication and IPDL system for communicating with and isolating sub-processes. Please file plugin-specific IPC bugs in Core: Plug-Ins and content-specific IPC bugs in Core: DOM: Content Processes.
Created attachment 613719[details][diff][review]
Set Delayed events timeout to 0 if it is negative
Sometime I see bogus warnings about negative timer interval which we are passing to QTimer (also QTimer does not start at all in that case).