QUIC - collect histogram data for secure (https) URLs to google servers.

QUIC - collect histogram data for secure (https) URLs to google servers.

By default QUIC is supporting secure (https) urls only. Thus, changed
Net.HttpJob.TotalTime*Quic histograms to track https urls only.

This would help while comparing QUIC vs NotQuic.

New histograms:
  Net.HttpJob.TotalTime.Secure.Quic
  Net.HttpJob.TotalTime.Secure.NotQuic
  Net.HttpJob.TotalTimeCached.Secure.Quic
  Net.HttpJob.TotalTimeCached.Secure.NotQuic
  Net.HttpJob.TotalTimeNotCached.Secure.Quic
  Net.HttpJob.TotalTimeNotCached.Secure.NotQuic

Obsolete histograms:
  Net.HttpJob.TotalTime.Quic
  Net.HttpJob.TotalTime.NotQuic
  Net.HttpJob.TotalTimeCached.Quic
  Net.HttpJob.TotalTimeCached.NotQuic
  Net.HttpJob.TotalTimeNotCached.Quic
  Net.HttpJob.TotalTimeNotCached.NotQuic

BUG=516048
R=rch@chromium.org,asvitkine@chromium.org

Review URL: https://codereview.chromium.org/1258923013

Cr-Commit-Position: refs/heads/master@{#341625}