Upstream Fuchsia changes in build file
This upstreams all changes done in the Fuchsia version of the ICU
repository into the Chromium ICU repository.
* Add an |icu_is_in_fuchsia| gn variable to differentiate the Fuchsia
build from the Chromium build.
* Add version.gni with the major version of ICU used defined.
* Move sources to sources.gni to make the main build file easier to
read.
* Modify update.sh to update sources.gni rather than BUILD.gn.
* Update README.chromium to match.
* Run gn format on BUILD.gn.
Bug: 1124037, fuchsia:56362
Change-Id: I954eddd4abc64694ac18f573d79b37380345cd1d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/deps/icu/+/2389120
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Frank Tang <ftang@chromium.org>
6 files changed
