Web Inspector: Modifications in a shadow tree don't update the Elements panel.
https://bugs.webkit.org/show_bug.cgi?id=97056

Reviewed by Pavel Feldman.

Source/WebCore:

Send characterDataModified event for shadow dom nodes too so they update the elements panel.

Test: inspector/elements/shadow-dom-modify-chardata.html

* dom/CharacterData.cpp:
(WebCore::CharacterData::dispatchModifiedEvent):

LayoutTests:

* inspector/elements/shadow-dom-modify-chardata-expected.txt: Added.
* inspector/elements/shadow-dom-modify-chardata.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk/LayoutTests@130004 268f45cc-cd09-0410-ab3c-d52691b4dbfc