Revert of Remove style spans to follow the styles of the block element

Revert of Remove style spans to follow the styles of the block element (patchset #2 id:20001 of https://codereview.chromium.org/2102913002/ )

Reason for revert:
Assignment within conditional on line 836 of ReplaceSelectionCommand.cpp is breaking Win8 build:

https://build.chromium.org/p/chromium.win/builders/Win8%20GYP%20%28dbg%29/builds/133

Original issue's description:
> Remove style spans to follow the styles of the block element
>
> This CL removes style spans to follow the styles of the block
> element(li, pre, td, and h1~6) when the text of the pasted
> or merged element becomes a part of the block element.
>
> BUG=226941
> TEST=third_party/WebKit/LayoutTests/editing/deleting/backspace-merge-into-block-element.html
>
> Committed: https://crrev.com/5220699381aae450f22d1ea3805141deb139f8f3
> Cr-Commit-Position: refs/heads/master@{#402659}

TBR=yosin@chromium.org,joone.hur@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=226941
Committed: https://crrev.com/45859e627709ac2a56e939a00f725a0fca27f75f
Cr-Commit-Position: refs/heads/master@{#402696}

[shans, 2016-06-29 03:05:42]

The CQ bit was checked by shans@chromium.org

[shans, 2016-06-29 03:05:43]

Created Revert of Remove style spans to follow the styles of the block element

[commit-bot: I haz the power, 2016-06-29 03:06:03]

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

[commit-bot: I haz the power, 2016-06-29 03:06:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-29 03:08:47]

Description was changed from

==========
Revert of Remove style spans to follow the styles of the block element (patchset
#2 id:20001 of https://codereview.chromium.org/2102913002/ )

Reason for revert:
Assignment within conditional on line 836 of ReplaceSelectionCommand.cpp is
breaking Win8 build:

https://build.chromium.org/p/chromium.win/builders/Win8%20GYP%20%28dbg%29/bui...

Original issue's description:
> Remove style spans to follow the styles of the block element
> 
> This CL removes style spans to follow the styles of the block
> element(li, pre, td, and h1~6) when the text of the pasted
> or merged element becomes a part of the block element.
> 
> BUG=226941
>
TEST=third_party/WebKit/LayoutTests/editing/deleting/backspace-merge-into-block-element.html
> 
> Committed: https://crrev.com/5220699381aae450f22d1ea3805141deb139f8f3
> Cr-Commit-Position: refs/heads/master@{#402659}

TBR=yosin@chromium.org,joone.hur@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=226941
==========

to

==========
Revert of Remove style spans to follow the styles of the block element (patchset
#2 id:20001 of https://codereview.chromium.org/2102913002/ )

Reason for revert:
Assignment within conditional on line 836 of ReplaceSelectionCommand.cpp is
breaking Win8 build:

https://build.chromium.org/p/chromium.win/builders/Win8%20GYP%20%28dbg%29/bui...

Original issue's description:
> Remove style spans to follow the styles of the block element
>
> This CL removes style spans to follow the styles of the block
> element(li, pre, td, and h1~6) when the text of the pasted
> or merged element becomes a part of the block element.
>
> BUG=226941
>
TEST=third_party/WebKit/LayoutTests/editing/deleting/backspace-merge-into-block-element.html
>
> Committed: https://crrev.com/5220699381aae450f22d1ea3805141deb139f8f3
> Cr-Commit-Position: refs/heads/master@{#402659}

TBR=yosin@chromium.org,joone.hur@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=226941

Committed: https://crrev.com/45859e627709ac2a56e939a00f725a0fca27f75f
Cr-Commit-Position: refs/heads/master@{#402696}
==========

[commit-bot: I haz the power, 2016-06-29 03:08:48]

Patchset 1 (id:??) landed as
https://crrev.com/45859e627709ac2a56e939a00f725a0fca27f75f
Cr-Commit-Position: refs/heads/master@{#402696}