Change builder default to 'Linux ChromiumOS Tests (dbg)(1)'

BUG=None
TEST=Run ./browsertest_status.py --tests_file=/path/to/your/tests/file/tests
I have a selection of pre-defined tests files located here, which you are welcome to use, or you can create your own: https://drive.google.com/corp/drive/folders/0BwSZgPXs_HfCZTllMDBkOTgtMGEwYS00NjMzLWIyNTEtMjYwYmQ0YTBjNzI1/0BwSZgPXs_HfCS1NmVW9qZG1EVEU/0BwSZgPXs_HfCSkZaM3dXX1hBMUk

Change-Id: Ibe5f7990119419f9b2c6fb1395fe393b0ed1104e
Reviewed-on: https://chromium-review.googlesource.com/245463
Reviewed-by: Kris Rambish <krisr@chromium.org>
Tested-by: Scott Cunningham <scunningham@chromium.org>
Commit-Queue: Scott Cunningham <scunningham@chromium.org>
1 file changed