Print gsutil error message when we enconter as 403 or 404

We appear to be getting 403's when encountering errors other than mismatched
credentials.  The error message was originally hidden to avoid clutter, but it
has become obvious that there are other transient errors hidden behind a 403.

This change prints the original gsutil error message regardless of whether or not
we enconter a 403 or 404.


BUG=

Review URL: https://chromiumcodereview.appspot.com/23484061

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@224195 0039d316-1c4b-4281-b951-d872f2087c98

download_from_google_storage.py

@@ -86,13 +86,13 @@ def check_bucket_permissions(bucket, gsutil):
   base_url = 'gs://%s' % bucket
 
   code, _, ls_err = gsutil.check_call('ls', base_url)
+  if code != 0:
+    print >> sys.stderr, ls_err
   if code == 403:
     print >> sys.stderr, 'Got error 403 while authenticating to %s.' % base_url
     print >> sys.stderr, 'Try running "download_from_google_storage --config".'
   elif code == 404:
     print >> sys.stderr, '%s not found.' % base_url
-  elif code != 0:
-    print >> sys.stderr, ls_err
   return (base_url, code)