Remove -webkit-line-box-contain implementation.

Remove -webkit-line-box-contain implementation.

Currently absent from specifications and seeing very low usage. We can
restore this functionality in the future un-prefixed if/when it's
clarified in a spec.

Usage: 0.0221%

Intent To Remove:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/rKDXtqvgDv4/1Q5ByQllDAAJ

BUG=522215
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201690

[wkorman, 2015-09-02 18:27:16]

wkorman@chromium.org changed reviewers:
+ eae@chromium.org, timloh@chromium.org

[wkorman, 2015-09-02 18:27:17]

+timloh to make sure I've not done anything unsavory CSS-wise, and +eae for
layout bits.

[wkorman, 2015-09-02 18:27:56]

The CQ bit was checked by wkorman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-02 18:28:10]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1328673003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1328673003/20001

[commit-bot: I haz the power, 2015-09-02 19:00:57]

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

[commit-bot: I haz the power, 2015-09-02 19:00:58]

Dry run: Try jobs failed on following builders:
  android_chromium_gn_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  android_chromium_gn_compile_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  android_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_compile...)
  cast_shell_android on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_andr...)
  chromeos_x86-generic_chromium_compile_only_ng on tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromeos_x86-ge...)
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[wkorman, 2015-09-02 19:51:45]

The CQ bit was checked by wkorman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-02 19:51:56]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1328673003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1328673003/40001

[Timothy Loh, 2015-09-02 20:48:56]

On 2015/09/02 18:27:17, wkorman wrote:
> +timloh to make sure I've not done anything unsavory CSS-wise, and +eae for
> layout bits.

lgtm!

[eae, 2015-09-02 20:51:51]

LGTM for layout/

[commit-bot: I haz the power, 2015-09-02 21:06:40]

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

[commit-bot: I haz the power, 2015-09-02 21:06:41]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[wkorman, 2015-09-03 00:07:29]

The CQ bit was checked by wkorman@chromium.org

[wkorman, 2015-09-03 00:07:30]

The patchset sent to the CQ was uploaded after l-g-t-m from timloh@chromium.org,
eae@chromium.org
Link to the patchset: https://codereview.chromium.org/1328673003/#ps50001
(title: "Fix up a few more tests.")

[commit-bot: I haz the power, 2015-09-03 00:07:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1328673003/50001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1328673003/50001

[commit-bot: I haz the power, 2015-09-03 02:30:44]

Committed patchset #4 (id:50001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201690