DevTools: use diff_match_patch instead of jsdifflib for text diffing.

DevTools: use diff_match_patch instead of jsdifflib for text diffing.

The diff_match_patch is a highly optimized google-owned library for
text diffing.

The patch creates a new module "diff" which other modules can depend on
to perform 

BUG=527993
R=pfeldman

Committed: https://crrev.com/ca1a0cd45313d38f188c8c2ba278a705216cbc1a
git-svn-id: svn://svn.chromium.org/blink/trunk@202290 bbb929c8-8fbe-4397-9dbb-9b2b20218538

[lushnikov, 2015-09-14 22:31:44]

ptal

[lushnikov, 2015-09-14 22:32:44]

Note: the diff_match_patch is distributed under Apache License 2.0. Should I add
the license text somewhere?

[pfeldman, 2015-09-14 22:37:07]

lgtm

On 2015/09/14 22:32:44, lushnikov wrote:
> Note: the diff_match_patch is distributed under Apache License 2.0. Should I
add
> the license text somewhere?

you should follow the established process for including the new third party
code.

[lushnikov, 2015-09-14 22:42:59]

The CQ bit was checked by lushnikov@chromium.org

[commit-bot: I haz the power, 2015-09-14 22:43:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336803005/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336803005/20001

[commit-bot: I haz the power, 2015-09-14 22:54:07]

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

[commit-bot: I haz the power, 2015-09-14 22:54:08]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[lushnikov, 2015-09-15 06:19:21]

The CQ bit was checked by lushnikov@chromium.org

[commit-bot: I haz the power, 2015-09-15 06:19:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336803005/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336803005/20001

[commit-bot: I haz the power, 2015-09-15 06:26:52]

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

[commit-bot: I haz the power, 2015-09-15 06:26:53]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[lushnikov, 2015-09-15 16:48:09]

The CQ bit was checked by lushnikov@chromium.org

[lushnikov, 2015-09-15 16:48:10]

The patchset sent to the CQ was uploaded after l-g-t-m from
pfeldman@chromium.org
Link to the patchset: https://codereview.chromium.org/1336803005/#ps40001
(title: "rebaseline")

[commit-bot: I haz the power, 2015-09-15 16:48:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336803005/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336803005/40001

[commit-bot: I haz the power, 2015-09-15 17:00:01]

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

[commit-bot: I haz the power, 2015-09-15 17:00:02]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[lushnikov, 2015-09-15 18:35:08]

The CQ bit was checked by lushnikov@chromium.org

[lushnikov, 2015-09-15 18:35:08]

The patchset sent to the CQ was uploaded after l-g-t-m from
pfeldman@chromium.org
Link to the patchset: https://codereview.chromium.org/1336803005/#ps60001
(title: "fix file permissions")

[commit-bot: I haz the power, 2015-09-15 18:35:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336803005/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336803005/60001

[commit-bot: I haz the power, 2015-09-15 20:06:36]

Committed patchset #4 (id:60001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=202290

[commit-bot: I haz the power, 2015-09-23 12:48:34]

Patchset 4 (id:??) landed as
https://crrev.com/ca1a0cd45313d38f188c8c2ba278a705216cbc1a