Web Inspector: Decorations in several consecutive lines are not moved correctly in DTE.
https://bugs.webkit.org/show_bug.cgi?id=113296

Reviewed by Pavel Feldman.

Separated removing and adding decorations so that moved decorations are not removed when next line is processed.

* inspector/front-end/DefaultTextEditor.js:
(WebInspector.TextEditorGutterPanel.prototype.textChanged):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146875 268f45cc-cd09-0410-ab3c-d52691b4dbfc