Make ParseChromeosImage globally callable.

Move the _ParseChromeosImage out of the JSONResultsReport class, and
make it a global function, so it can be easily called from other
places.

BUG=None
TEST=Tested with and without generating json reports, with the function
moved, and everything still works.

Change-Id: I71c0435e0da9e687f69b4cebd5e3f36764d495e1
Reviewed-on: https://chrome-internal-review.googlesource.com/228840
Commit-Ready: Caroline Tice <cmtice@google.com>
Tested-by: Caroline Tice <cmtice@google.com>
Reviewed-by: Caroline Tice <cmtice@google.com>
1 file changed