Dispatch middle click manually by tracking mouse

Dispatch middle click manually by tracking mouse

Tracking targets for middle button mousedown event
and fire click event for it on mouse up if necessary.

Note: The click is not finding the common parent of
mousedown and up targets for simplicty and only sends
the click to the target if both down and up happened
on the same node.

BUG=608697
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1963823002
Cr-Commit-Position: refs/heads/master@{#395707}
(cherry picked from commit 88eb1110baafcba070e750866a343e81b6bcc524)

Committed: https://chromium.googlesource.com/chromium/src/+/4d43781be25ba16cb8a8be67a64a32d6991bb53d

[dtapuska, 2016-05-30 15:58:15]

Description was changed from

==========
Dispatch middle click manually by tracking mouse

Tracking targets for middle button mousedown event
and fire click event for it on mouse up if necessary.

Note: The click is not finding the common parent of
mousedown and up targets for simplicty and only sends
the click to the target if both down and up happened
on the same node.

BUG=608697
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1963823002
Cr-Commit-Position: refs/heads/master@{#395707}
(cherry picked from commit 88eb1110baafcba070e750866a343e81b6bcc524)
==========

to

==========
Dispatch middle click manually by tracking mouse

Tracking targets for middle button mousedown event
and fire click event for it on mouse up if necessary.

Note: The click is not finding the common parent of
mousedown and up targets for simplicty and only sends
the click to the target if both down and up happened
on the same node.

BUG=608697
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1963823002
Cr-Commit-Position: refs/heads/master@{#395707}
(cherry picked from commit 88eb1110baafcba070e750866a343e81b6bcc524)

Committed:
https://chromium.googlesource.com/chromium/src/+/4d43781be25ba16cb8a8be67a64a...
==========

[dtapuska, 2016-05-30 15:58:16]

Committed patchset #1 (id:1) manually as
4d43781be25ba16cb8a8be67a64a32d6991bb53d.