Google's Chrome browser, being built from the open source Chromium project, is written almost entirely in C++. I, being a long time Object Pascal guy, have had to adjust to using C++ exclusively. This isn't too much of an issue since I've also had to use C/C++ while I worked on the RAD Studio development team. Most notably, the Object Pascal/Delphi compiler is written in mostly C with a smattering of C++, the editor kernel (sans display rendering) and debugger engine (process control/symbol table management) were written in C++. All of which I've worked on throughout my 24+ years on that team.