Don't skip over /usr/local/autotest when generating symbols.
Don't skip over /usr/local/autotest when generating symbols.

Right now, the buildbot won't symbolize any crash that occurs in autotest
because all symbols in /usr/local/autotest are skipped by breakpad. Tweak
cros_generate_breakpad_symbols to not skip over these symbols so that
browser test crashes can be symbolized.

BUG=chromium-os:25061
TEST=Run cros_generate_breakpad_symbols and verify it still completes
     successfully, and generates working symbols for autotest that can
     be used to symbolize browser test crashes.

Change-Id: I072498060e78b373bd12c94ff95465878301cbce
Reviewed-on: https://gerrit.chromium.org/gerrit/14155
Commit-Ready: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Tested-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

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