To be precise: No, they don't. Their engines are based on the same codebase, but they still are running their own installed engines.
In contrast, Apple doesn't just refuse to allow non-WebKit engines. It requires everyone to use the pre-installed, Apple-provided engine. You can't use your own build of WebKit.
To be precise: No, they don't. Their engines are based on the same codebase, but they still are running their own installed engines.
In contrast, Apple doesn't just refuse to allow non-WebKit engines. It requires everyone to use the pre-installed, Apple-provided engine. You can't use your own build of WebKit.