RenderText: Fix crash itemizing obscured emoji.

RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples, http auth, etc).
R=sadrul@chromium.org

Committed: https://crrev.com/6b6b3ca4881af54cbc11fd86b9d24afd08545b54
Cr-Commit-Position: refs/heads/master@{#401077}

[msw, 2016-06-21 18:32:18]

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

[commit-bot: I haz the power, 2016-06-21 18:33:01]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2081273002/20001

[msw, 2016-06-21 18:45:46]

Description was changed from

==========
RenderText: Fix crash itemizing obscured emoji.

BUG=606009
==========

to

==========
RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples,
http auth, etc).
R=sadrul@chromium.org
==========

[msw, 2016-06-21 18:45:46]

msw@chromium.org changed reviewers:
+ sadrul@chromium.org

[msw, 2016-06-21 18:47:40]

Hey Sadrul, please take a look; thanks!

[sadrul, 2016-06-21 19:06:28]

lgtm

[commit-bot: I haz the power, 2016-06-21 19:30:31]

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

[commit-bot: I haz the power, 2016-06-21 19:30:32]

Dry run: This issue passed the CQ dry run.

[msw, 2016-06-21 19:30:55]

The CQ bit was checked by msw@chromium.org

[commit-bot: I haz the power, 2016-06-21 19:32:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2081273002/20001

[commit-bot: I haz the power, 2016-06-21 19:37:58]

Description was changed from

==========
RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples,
http auth, etc).
R=sadrul@chromium.org
==========

to

==========
RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples,
http auth, etc).
R=sadrul@chromium.org
==========

[commit-bot: I haz the power, 2016-06-21 19:38:00]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-21 19:41:52]

Description was changed from

==========
RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples,
http auth, etc).
R=sadrul@chromium.org
==========

to

==========
RenderText: Fix crash itemizing obscured emoji.

Fix the temporary color style BreakList length for layout/display text.
(the text passed in is shorter when multi-char glyphs are obscured)
Add a regression unit test.

This continues mukai@'s work in:
  https://codereview.chromium.org/993153003/

TODO: Fix cursor placement and movement for obscured emoji.

BUG=606009
TEST=No crash pasting '📷 📷' into a Views password textfield (views examples,
http auth, etc).
R=sadrul@chromium.org

Committed: https://crrev.com/6b6b3ca4881af54cbc11fd86b9d24afd08545b54
Cr-Commit-Position: refs/heads/master@{#401077}
==========

[commit-bot: I haz the power, 2016-06-21 19:41:54]

Patchset 2 (id:??) landed as
https://crrev.com/6b6b3ca4881af54cbc11fd86b9d24afd08545b54
Cr-Commit-Position: refs/heads/master@{#401077}