This adds a moz.build file for the tests. The alternative would be to hack up
the gyp files. Since gyp support has already been removed from upstream, this
does not really buy us anything as far as maintainabily goes. Once gn support
is available in our build system, we can remove this moz.build file and use
the gn files instead.
The include paths for the gtest and gmock headers in the webrtc.org tests are
not compatible with where we export the headers. We could patch each unittest,
but the include location has already changed upstream making this painful
to maintain. Instead, we duplicate the relevant headers to the expected path.
MozReview-Commit-ID: 1ADUAMxTCFq
--HG--
extra : rebase_source : 2cc10faa7018ee8af8e8f3d7805265ed2dd89507