Removed connection warmup logic from data reduction proxy

Removed connection warmup logic from data reduction proxy

This change removes logic that would issue a request through
the data reduction proxy immediately after every network change.

BUG=411448
Committed: https://crrev.com/0e5e102343553fd0c0c1cbe0353fca438057976e
Cr-Commit-Position: refs/heads/master@{#294223}

[bengr, 2014-09-08 00:55:28]

bengr@chromium.org changed reviewers:
+ mef@chromium.org

[bengr, 2014-09-08 00:55:29]

mef:  Everything. The other OWNER of the component is on vacation. This change
only removes logic.

[bengr, 2014-09-10 08:14:35]

bengr@chromium.org changed reviewers:
+ marq@chromium.org
- mef@chromium.org

[bengr, 2014-09-10 08:14:36]

marq: everything

[marq (ping after 24h), 2014-09-10 08:23:20]

lgtm

[bengr, 2014-09-10 19:11:47]

The CQ bit was checked by bengr@chromium.org

[commit-bot: I haz the power, 2014-09-10 19:12:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/bengr@chromium.org/548993002/20001

[commit-bot: I haz the power, 2014-09-10 20:47:50]

Committed patchset #2 (id:20001) as 829fed8242e35695d4afa0b82f8616477d77efa2

[commit-bot: I haz the power, 2014-09-10 20:54:13]

Patchset 2 (id:??) landed as
https://crrev.com/0e5e102343553fd0c0c1cbe0353fca438057976e
Cr-Commit-Position: refs/heads/master@{#294223}