Fix the secure proxy check state displayed on net-internals#bandwidth.

In the Data Reduction Proxy event store, if the secure proxy check failed
due to an HTTP response status failure, or a content failure (i.e. the
check returned text that wasn't "OK"), the net-internals#bandwidth page
would indicate that the secure proxy check (incorrectly) succeeded.

Other logs on the page would show the failure of the secure proxy check.

This is a logging/display only bug (no functionality was affected).

BUG=496731

Review URL: https://codereview.chromium.org/1154623008

Cr-Commit-Position: refs/heads/master@{#333017}
2 files changed