Pull libdexfile in chromium

Pull in libdexfile from Android. It is used by libunwindstack to get
function names for interpreted java names.
Defines two compile flags required to compile libunwindstack with libdexfile.
`DEXFILE_SUPPORT` - To use libdexfile apis in libunwindstack.
`STATIC_LIB` - To compile libunwindstack statically with libdexfile.
  In Android libdexfile is a shared library provided by platform and
  libunwindstack in Android is built without this flag.

Bug: 1365904
Change-Id: Ia01ea81ae877c39e12f17cae71b9255c31eaf981
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/third_party/libunwindstack/+/3913229
Reviewed-by: Mike Wittman <wittman@chromium.org>
101 files changed