BUG=angleproject:1184

This is reland of parts of commit 56627322.
It also adds <algorithm> include in FunctionsWGL.cpp,
which is needed for std::find on GCC.

Change-Id: I852008087afa6b12da6e7e29934fa83390fded21
Reviewed-on: https://chromium-review.googlesource.com/308090Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>