Retry requests on reused sockets when receiving 408 responses.

Retry requests on reused sockets when receiving 408 responses.

408s indicate a socket was left idle for too long before
sending a request.

It's possible these errors are being surfaced to users more often
than previously due to https://codereview.chromium.org/169643006,
for servers that very aggressively time out never-used sockets.

BUG=377581
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274760

[mmenke, 2014-06-03 17:39:30]

Will:  Know you're travelling.  Wasn't sure if I should send this to you or not.

[willchan no longer on Chromium, 2014-06-03 21:01:02]

LGTM

https://codereview.chromium.org/303443011/diff/1/net/http/http_network_transa...
File net/http/http_network_transaction_unittest.cc (right):

https://codereview.chromium.org/303443011/diff/1/net/http/http_network_transa...
net/http/http_network_transaction_unittest.cc:1450:
KeepAliveConnectionResendRequestTest(NULL, &read_failure);
Indentation is off

[mmenke, 2014-06-03 22:45:58]

https://codereview.chromium.org/303443011/diff/1/net/http/http_network_transa...
File net/http/http_network_transaction_unittest.cc (right):

https://codereview.chromium.org/303443011/diff/1/net/http/http_network_transa...
net/http/http_network_transaction_unittest.cc:1450:
KeepAliveConnectionResendRequestTest(NULL, &read_failure);
On 2014/06/03 21:01:02, willchan (traveling 5.23-6.27) wrote:
> Indentation is off

Done.

[mmenke, 2014-06-03 22:46:49]

The CQ bit was checked by mmenke@chromium.org

[commit-bot: I haz the power, 2014-06-03 22:48:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mmenke@chromium.org/303443011/20001

[commit-bot: I haz the power, 2014-06-04 02:10:09]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)

[commit-bot: I haz the power, 2014-06-04 10:55:59]

Change committed as 274760