Reviewed by Yury Semikhatsky.

        Web Inspector: fix incremental html highlight.
        https://bugs.webkit.org/show_bug.cgi?id=60163

        SourceTokenizers for html, js, and css are declared to be stateless. However they store some state in
        various ways (like using _internalJavaScriptTokenizer field in html tokenizer, or modifying "static"
        initialCondition object via condition link). This all worked because of another bug in tokenizers registry
        that always returned new tokenizer object.
        For incremental highlighting, we need to be able to stringify tokenizers state and then restore the
        state from string. That's why we need tokenizers to be truly stateless.

        * inspector/front-end/DOMSyntaxHighlighter.js:
        (WebInspector.DOMSyntaxHighlighter.prototype.syntaxHighlightNode):
        * inspector/front-end/SourceCSSTokenizer.js:
        (WebInspector.SourceCSSTokenizer):
        (WebInspector.SourceCSSTokenizer.prototype.createInitialCondition):
        * inspector/front-end/SourceCSSTokenizer.re2js:
        * inspector/front-end/SourceHTMLTokenizer.js:
        (WebInspector.SourceHTMLTokenizer):
        (WebInspector.SourceHTMLTokenizer.prototype.createInitialCondition):
        (WebInspector.SourceHTMLTokenizer.prototype.set line):
        (WebInspector.SourceHTMLTokenizer.prototype.get _internalJavaScriptTokenizer):
        (WebInspector.SourceHTMLTokenizer.prototype.get _internalCSSTokenizer):
        (WebInspector.SourceHTMLTokenizer.prototype.scriptStarted):
        (WebInspector.SourceHTMLTokenizer.prototype.styleSheetStarted):
        (WebInspector.SourceHTMLTokenizer.prototype.nextToken):
        * inspector/front-end/SourceHTMLTokenizer.re2js:
        * inspector/front-end/SourceJavaScriptTokenizer.js:
        (WebInspector.SourceJavaScriptTokenizer):
        (WebInspector.SourceJavaScriptTokenizer.prototype.createInitialCondition):
        * inspector/front-end/SourceJavaScriptTokenizer.re2js:
        * inspector/front-end/SourceTokenizer.js:
        (WebInspector.SourceTokenizer.Registry.prototype.getTokenizer):
        * inspector/front-end/TextEditorHighlighter.js:
        (WebInspector.TextEditorHighlighter.prototype._highlightLines):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@86430 268f45cc-cd09-0410-ab3c-d52691b4dbfc