ANGLE requires Win7, we need to disable accelerated compositing on earlier Windows versions. In addition, we need to define PSAPI_VERSION = 1, if we are going to call GetProcessMemoryInfo() on WinXP, see https://msdn.microsoft.com/en-us/library/windows/desktop/ms683219(v=vs.85).aspx.
Created attachment 257180 [details] Patch
Thanks for reviewing :)
Comment on attachment 257180 [details] Patch Clearing flags on attachment: 257180 Committed r187109: <http://trac.webkit.org/changeset/187109>
All reviewed patches have been landed. Closing bug.