Make ant failures easier to debug
Make ant failures easier to debug

Normally, ant commands (even when successful) have lots of useless
output. So, for most of our ant commands we pass the -quiet flag. This
is much better for successful builds but it makes debugging failures
more difficult (though even without -quiet ant failures are difficult to
diagnose without -verbose.

So, the only way that ant failures are easy to debug is if the -verbose
flag is passed to ant. This flag is much too noisy to always pass. This
change makes it so that if a call to ant fails, we repeat that call with
the -verbose flag (and without -quiet) so that the output that the
developer sees is most useful.

Review URL: https://codereview.chromium.org/193283002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@256179 0039d316-1c4b-4281-b951-d872f2087c98

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