This patch removes C++ code related to reading in XPT information from
files. (Code related to packaging XPT files will be removed in the
next patch.) This includes code in the manifest parser, in addition to
the actual code for parsing files.
XPT information is now loaded directly from a single static data
structure, XPTHeader::kHeader, which will be automatically generated
at compile time from .idl files (via .xpt files). Note that the script
to do that is not added until part 6 of this patch series, so linking
will fail on parts 2 through 5.
I inlined XPTInterfaceInfoManager::RegisterXPTHeader into the ctor,
because that is the only caller. It feels like the lock there should
not be needed any more, but I left it alone for now.
The forward declaration of XPTArena in xptiprivate.h is needed because
it was being bootlegged via xpt_xdr.h. Some of the data structures in
reflect/xptinfo/ (which wrap the xpt_struct.h data structures) are
still allocated using XPTArena. Hopefully we can get rid of that in
followup work.
I also deleted a lot of comments in xpt_struct.h that talk about the
on-disk format. I also deleted checking of the major version number,
because that should not matter when the XPT information is baked into
the executable.
MozReview-Commit-ID: 6NJdaCWRBhU
6e85116f2d