debugger: Sideload SKPs, but only if logged in.
debugger: Sideload SKPs, but only if logged in.

TBR=rmistry
BUG=skia:

Review-Url: https://codereview.chromium.org/2100803005

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot