https://bugs.webkit.org/show_bug.cgi?id=113346

Patch by Andrey Lushnikov <lushnikov@chromium.org> on 2013-03-28
Reviewed by Pavel Feldman.

Source/WebCore:

No new tests: no change in behaviour.

- Append spans instead of text nodes to lineRows.
- Set positioning of all spans inside of webkit-line-content as
relative
- Set z-index property so that overlay highlight is above line
background but under text.

* inspector/front-end/DefaultTextEditor.js:
(WebInspector.TextEditorMainPanel.prototype._measureHighlightDescriptor):
(WebInspector.TextEditorMainPanel.prototype._measureSpans):
(WebInspector.TextEditorMainPanel.prototype._renderRanges):
(WebInspector.TextEditorMainPanel.prototype._insertSpanBefore):
* inspector/front-end/textEditor.css:
(.webkit-line-content > .text-editor-overlay-highlight):
(.webkit-line-content > *):

LayoutTests:

Updated test expectations to correspond to new DefaultTextEditor's DOM
layout.

* inspector/editor/text-editor-brace-highlighter-expected.txt:
* inspector/editor/text-editor-highlight-api-expected.txt:
* inspector/editor/text-editor-highlight-token-expected.txt:
* inspector/editor/text-editor-long-line-expected.txt:
* inspector/editor/text-editor-remove-chunks-from-dom-expected.txt:
* inspector/editor/text-editor-show-whitespace-expected.txt:
* inspector/editor/text-editor-type-over-decoration-expected.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147095 268f45cc-cd09-0410-ab3c-d52691b4dbfc