Bug 913813 - HTTP cache v1/v2 miss/hit time compare telemetry, r=michal
Bug 914824 - HTTP cache v1/v2 general timing and hit rate compare telemetry, r=michal
bug 918265 - deal with long www-authenticate fields r=sworkman

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extra : rebase_source : 55e06159aa7f6464c07d3736580af26090a87179