DevTools: DataGrid: turn "element" getter to function.

DevTools: DataGrid: turn "element" getter to function.

BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=179842

[lushnikov, 2014-08-08 09:52:20]

lgtm

[vsevik, 2014-08-08 11:30:45]

lgtm

[commit-bot: I haz the power, 2014-08-08 11:31:41]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/eustas@chromium.org/449413002/1

[commit-bot: I haz the power, 2014-08-08 13:00:06]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/2...)
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/1...)
  mac_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/mac_blink_rel/builds/19001)
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/21738)

[commit-bot: I haz the power, 2014-08-08 13:25:56]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-08-08 13:25:57]

Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/1...)

[eustas, 2014-08-08 13:59:42]

The CQ bit was checked by eustas@chromium.org

[commit-bot: I haz the power, 2014-08-08 14:00:52]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/eustas@chromium.org/449413002/20001

[commit-bot: I haz the power, 2014-08-08 16:05:43]

Change committed as 179842