HttpDownloaderTest doesn't get run in gitlab-ci since it was too flaky with
internet connections in the emulator. So these were missed until I manually
ran the tests.
688057b3e7e214db49566b84d5b3dcd0db30dc2b
195aaae7e52dc1c47741965904ed17bdc816a71c
df08e84e7829652d7999eee5451080a012b00a1e