Remove WebTouchEvent.changedTouches

Remove WebTouchEvent.changedTouches

This field is no longer needed or in use by embedders, and can be
safely removed.

This is part 4 of a 4-sided patch simplifying WebTouchEvent:
1) https://codereview.chromium.org/557863002/
2) https://codereview.chromium.org/558773002/
3) https://codereview.chromium.org/559693003/
4) This change

BUG=358132
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181834

[jdduke (slow), 2014-09-10 03:03:34]

jdduke@chromium.org changed reviewers:
+ pfeldman@chromium.org

[jdduke (slow), 2014-09-10 03:03:34]

pfeldman@: OK, last review in this CL chain (many thanks, and again, sorry for
the noise!).

[pfeldman, 2014-09-10 18:37:52]

lgtm

[jdduke (slow), 2014-09-11 15:36:06]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-09-11 15:37:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/560493003/1

[commit-bot: I haz the power, 2014-09-11 15:39:59]

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

[commit-bot: I haz the power, 2014-09-11 15:39:59]

Try jobs failed on following builders:
  android_blink_compile_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/android_blink_compile_re...)
  mac_blink_compile_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/mac_blink_compile_dbg/bu...)
  mac_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/mac_gpu/builds/54687)

[jdduke (slow), 2014-09-11 15:41:15]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-09-11 15:42:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/560493003/20001

[commit-bot: I haz the power, 2014-09-11 15:52:02]

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

[commit-bot: I haz the power, 2014-09-11 15:52:05]

Try jobs failed on following builders:
  linux_chromium_gn_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_chromium_gn_rel/bu...)
  mac_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/mac_gpu/builds/54692)

[jdduke (slow), 2014-09-11 16:35:03]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-09-11 16:35:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/560493003/40001

[commit-bot: I haz the power, 2014-09-11 16:48:47]

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

[commit-bot: I haz the power, 2014-09-11 16:48:49]

Try jobs failed on following builders:
  mac_blink_compile_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/mac_blink_compile_dbg/bu...)

[jdduke (slow), 2014-09-11 16:51:08]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-09-11 16:51:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/560493003/60001

[commit-bot: I haz the power, 2014-09-11 17:53:32]

Committed patchset #4 (id:60001) as 181834