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In jumbo builds many cc files compile in the same translation
unit and then they share the same anonymous namespace. Having
two methods with the same name will then result in compilation
failures.

In preparation for jumbo in chrome/browser, this patch renames
some functions and metrics related to ssl interstitial pages.

Bug: 746957
Change-Id: If8218168d38a7ddae9f2fcdb09b2956018aacd8f
Reviewed-on: https://chromium-review.googlesource.com/895370Reviewed-by: Emily Stark <estark@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#533608}