[webkit-dev] [cmake] Proposal: Move commonly used platform-dependent files in WebCore to .cmake include files.

[Michael Catanzaro]

I'm curious what Martin and Alex think about this. It seems fine to me;
the downside is there are more CMake files to maintain, the upside is
the big ones should be slightly smaller, and we can reduce duplication
between PlatformEFL.cmake and PlatformGTK.cmake.

Michael