Revert of No extra space emission in TextIterator::HandleTextNode

Revert of No extra space emission in TextIterator::HandleTextNode (patchset #6 id:100001 of https://codereview.chromium.org/2894543002/ )

Reason for revert:
Breaking this case:

<div class=container id=div4 style="width:30px">
foooooooooooooooo

<span style="white-space: pre">bar</span>
</div>

Original issue's description:
> No extra space emission in TextIterator::HandleTextNode
> 
> Due to historical reasons, TextIterator emits an extra space before a text node
> with "white-space: pre" style if the last text node contains only collapsed
> whitespaces. This might be a workaround for some other buggy behavior, which
> no longer exists today.
> 
> Hence, this patch removes the extra space emission.
> 
> BUG=721957
> 
> Review-Url: https://codereview.chromium.org/2894543002
> Cr-Commit-Position: refs/heads/master@{#473072}
> Committed: https://chromium.googlesource.com/chromium/src/+/9b781c354432f97658390c848359d2d70ceb1cb5

TBR=yosin@chromium.org,xiaochengh@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=721957
Review-Url: https://codereview.chromium.org/2896033003
Cr-Commit-Position: refs/heads/master@{#473785}
Committed: https://chromium.googlesource.com/chromium/src/+/ea8d0167edd856fc587d630b9b2d635cefab5798

[Xiaocheng, 2017-05-22 22:04:51]

The CQ bit was checked by xiaochengh@chromium.org

[Xiaocheng, 2017-05-22 22:04:52]

Created Revert of No extra space emission in TextIterator::HandleTextNode

[commit-bot: I haz the power, 2017-05-22 22:05:31]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Xiaocheng, 2017-05-22 23:55:29]

The CQ bit was checked by xiaochengh@chromium.org

[commit-bot: I haz the power, 2017-05-22 23:56:11]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[yosin_UTC9, 2017-05-23 01:16:35]

lgtm ...

[commit-bot: I haz the power, 2017-05-23 02:12:21]

CQ is committing da patch.

Bot data: {"patchset_id": 300001, "attempt_start_ts": 1495497329685420,
"parent_rev": "f44f50c9aaa57c68b4de5b23b2a8433d40ca98a2", "commit_rev":
"ea8d0167edd856fc587d630b9b2d635cefab5798"}

[commit-bot: I haz the power, 2017-05-23 02:12:42]

Description was changed from

==========
Revert of No extra space emission in TextIterator::HandleTextNode (patchset #6
id:100001 of https://codereview.chromium.org/2894543002/ )

Reason for revert:
Breaking this case:

<div class=container id=div4 style="width:30px">
foooooooooooooooo

<span style="white-space: pre">bar</span>
</div>

Original issue's description:
> No extra space emission in TextIterator::HandleTextNode
> 
> Due to historical reasons, TextIterator emits an extra space before a text
node
> with "white-space: pre" style if the last text node contains only collapsed
> whitespaces. This might be a workaround for some other buggy behavior, which
> no longer exists today.
> 
> Hence, this patch removes the extra space emission.
> 
> BUG=721957
> 
> Review-Url: https://codereview.chromium.org/2894543002
> Cr-Commit-Position: refs/heads/master@{#473072}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9b781c354432f97658390c848359...

TBR=yosin@chromium.org,xiaochengh@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=721957
==========

to

==========
Revert of No extra space emission in TextIterator::HandleTextNode (patchset #6
id:100001 of https://codereview.chromium.org/2894543002/ )

Reason for revert:
Breaking this case:

<div class=container id=div4 style="width:30px">
foooooooooooooooo

<span style="white-space: pre">bar</span>
</div>

Original issue's description:
> No extra space emission in TextIterator::HandleTextNode
> 
> Due to historical reasons, TextIterator emits an extra space before a text
node
> with "white-space: pre" style if the last text node contains only collapsed
> whitespaces. This might be a workaround for some other buggy behavior, which
> no longer exists today.
> 
> Hence, this patch removes the extra space emission.
> 
> BUG=721957
> 
> Review-Url: https://codereview.chromium.org/2894543002
> Cr-Commit-Position: refs/heads/master@{#473072}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9b781c354432f97658390c848359...

TBR=yosin@chromium.org,xiaochengh@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=721957

Review-Url: https://codereview.chromium.org/2896033003
Cr-Commit-Position: refs/heads/master@{#473785}
Committed:
https://chromium.googlesource.com/chromium/src/+/ea8d0167edd856fc587d630b9b2d...
==========

[commit-bot: I haz the power, 2017-05-23 02:12:46]

Committed patchset #2 (id:300001) as
https://chromium.googlesource.com/chromium/src/+/ea8d0167edd856fc587d630b9b2d...