To avoid conflicting IDs between Alloy (which uses cef.pak) and Chrome
(which uses chrome_100_percent.pak) the cef/LICENSE.txt file is now included
in both cef/libcef/resources/cef_resources.grd and
chrome/app/theme/chrome_unscaled_resources.grd with different ID values.
The cef.pak file currently contains both CEF-specific resources and Chrome
resources that are already included in the default *.pak files distributed
with Chrome. In the future we should remove this duplication and just
distribute the same *.pak files as Chrome for the majority of resources.