commit aa76e887d1add5c2ad4172a47b324849f83b5dbd
author Xi Han <hanxi@google.com> Wed Feb 01 23:27:19 2017
committer Xi Han <hanxi@google.com> Wed Feb 01 23:27:19 2017
tree 56c0e20985f4dd2e3ddd0c9daadeec2459f2ae89
parent 444e1132b45c465729a7c7742685594365a5d130

Chrome should send cookieless request to WebAPK server.

WebAPK server only takes the user agent from the request sent from
Chrome, and ignores cookies. From security perspective, it is safer
to send request without any cookie. Therefore, we add flag to exlude
cookies from the request to the WebAPK server.

BUG=687191

Review-Url: https://codereview.chromium.org/2669463004
Cr-Commit-Position: refs/heads/master@{#447282}
(cherry picked from commit 3faa6994cce92431aa1ba5179aa92e3a45a7bb91)

Review-Url: https://codereview.chromium.org/2668423002 .
Cr-Commit-Position: refs/branch-heads/2987@{#256}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}