Fix an issue that download is not automatically resumed
An interrupted download will automatically resume after network reconnection.
However, if the interruption is caused by switching active networks,
no reconnection event will happen.
For example, download may get interrupted if it is started on LTE and then OS decides to switch to WIFI.
In this case, we should immediately resume the download rather than waiting for reconnection.
BUG=707753
Review-Url: https://codereview.chromium.org/2864533004
Cr-Commit-Position: refs/heads/master@{#471004}
1 file changed
