At the moment, specifying --dependencies to upload all dependent CLs
will always prompt for confirmation if --force was specified. This
means that there is no way to run this command in a batch way or from
another script, and it's also in contradiction to the --force flag
which is meant to answer 'yes' to all prompts.

This uses a pattern that is used several times in the script, which is
to check 'if not force: prompt()'.

Change-Id: I7d85b02b68d958a5b2d3295a04c4ced023d36ec8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2139700
Auto-Submit: Jose Lopes <jabolopes@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>