[m54 merge] Set QUIC connection's last_send_for_timeout_ to the send time of the first sent packet …

[m54 merge] Set QUIC connection's last_send_for_timeout_ to the send time of the first sent packet after receiving a packet, even if the sent packet is not a retransmission. Protected by default enabled --quic_better_last_send_for_timeout

Merge internal change: 131623416

BUG=642017
Review-Url: https://codereview.chromium.org/2288843002
Cr-Commit-Position: refs/heads/master@{#415157}
(cherry picked from commit 10ae460d345bb14f03972f43c253c822e08ed5e2)

Committed: https://chromium.googlesource.com/chromium/src/+/851a953ab4c9ca773977a3c057bb3150bdcc9cde

[Ryan Hamilton, 2016-09-02 18:14:34]

Description was changed from

==========
[m54 merge] Set QUIC connection's last_send_for_timeout_ to the send time of the
first sent packet after receiving a packet, even if the sent packet is not a
retransmission. Protected by default enabled --quic_better_last_send_for_timeout

Merge internal change: 131623416

BUG=642017

Review-Url: https://codereview.chromium.org/2288843002
Cr-Commit-Position: refs/heads/master@{#415157}
(cherry picked from commit 10ae460d345bb14f03972f43c253c822e08ed5e2)
==========

to

==========
[m54 merge] Set QUIC connection's last_send_for_timeout_ to the send time of the
first sent packet after receiving a packet, even if the sent packet is not a
retransmission. Protected by default enabled --quic_better_last_send_for_timeout

Merge internal change: 131623416

BUG=642017

Review-Url: https://codereview.chromium.org/2288843002
Cr-Commit-Position: refs/heads/master@{#415157}
(cherry picked from commit 10ae460d345bb14f03972f43c253c822e08ed5e2)

Committed:
https://chromium.googlesource.com/chromium/src/+/851a953ab4c9ca773977a3c057bb...
==========

[Ryan Hamilton, 2016-09-02 18:14:35]

Committed patchset #1 (id:1) manually as
851a953ab4c9ca773977a3c057bb3150bdcc9cde.