Refinery: Set symbol path in heap analyzer unittests.
Refinery: Set symbol path in heap analyzer unittests.

R=sebmarchand@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1532393002

google/syzygy,google/syzygy,Eloston/syzygy,Eloston/syzygy,google/syzygy,google/syzygy