This makes the Safe Browsing interstitial unit & browser tests work for both the V2 and V3 versions. For the unit tests, I did this by using typed tests. Typed tests aren't supported for browser tests, so for the browser tests I moved the tests into methods that could be invoked twice.
Also includes a small bugfix in a string that was causing a failure.
BUG=
381260
Committed:
https://src.chromium.org/viewvc/chrome?view=rev&revision=277749