Fix (most) generated includes to have gen/ in their path.
This makes it easier to tell where files exist on disk.
Unfortunately I had to leave the old include path
in engine/BUILD.gn to support all the v8 includes
which were too many to deal with in this patch.
It's a little nasty to have the raw build directory
in our include path, but it produces nicer paths.
R=abarth@chromium.org
This CL is a rough pass over the HTMLTokenizer to align it with parsing.md.
We'll need to do another pass more carefully in the future, but this CL gets us
roughly in the right ballpark.
We're not handling EOF properly. The parsing.md spec doesn't push the EOF
though the parser, which breaks our current way of handling EOF. We do ok if we
get EOF in the DataState, and that's enough to pass the tests for now.
Also, update camel-case.sky to reflect the fact that the parser doesn't
lower-case tag names anymore.
R=eseidel@chromium.org
Review URL: https://codereview.chromium.org/678263002
