During editing, merge inline style with overriding other author styles

During editing, merge inline style with overriding other author styles

Inline styles need to override other author styles even on DoNotOverrideValues mode.
So, merge and override inline styles to other author styles before merging them to m_mutableStyle.

Test: editing/deleting/merge-div-with-inline-style.html

Merge from WebKit: http://webkit.org/b/122874

BUG=371312
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178739

[Kyungtae Kim, 2014-05-12 06:22:41]

PTAL

[eseidel, 2014-05-29 00:14:18]

Yosin is your best editing reviewer.

[yosin_UTC9, 2014-05-29 01:18:23]

ACK if {linux,mac,win}_blink_rel passed.

It is better to put test file name in bottom as other Chromium patch
description:

BUG=371312
TEST=editing/deleting/merge-div-with-inline-style.html

Add yutak@ as OWNERE.

[Yuta Kitamura, 2014-05-29 06:48:24]

LGTM with nits.

https://codereview.chromium.org/272753003/diff/1/LayoutTests/editing/deleting...
File LayoutTests/editing/deleting/merge-div-with-inline-style.html (right):

https://codereview.chromium.org/272753003/diff/1/LayoutTests/editing/deleting...
LayoutTests/editing/deleting/merge-div-with-inline-style.html:19: + 'The test
passes if "bar" has the blue color and 20px font-size.');
nit: We generally use green to indicate a pass,
so you probably should follow the convention here.

https://codereview.chromium.org/272753003/diff/1/LayoutTests/editing/deleting...
LayoutTests/editing/deleting/merge-div-with-inline-style.html:27: </body>
nit: Unnecessary space

[Kyungtae Kim, 2014-07-23 02:36:14]

The CQ bit was checked by ktf.kim@samsung.com

[commit-bot: I haz the power, 2014-07-23 02:36:42]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ktf.kim@samsung.com/272753003/20001

[commit-bot: I haz the power, 2014-07-23 07:13:37]

Change committed as 178739