Unreviewed, rolling out r103000.

Unreviewed, rolling out r103000.
http://trac.webkit.org/changeset/103000
https://bugs.webkit.org/show_bug.cgi?id=74658

Does not handle text/plain documents correctly.

Source/WebCore:

* html/parser/HTMLTokenizer.cpp:
* html/parser/HTMLTokenizer.h:
* html/parser/HTMLTreeBuilder.cpp:
* html/parser/HTMLTreeBuilder.h:
* xml/parser/MarkupTokenizerBase.h:

LayoutTests:

* html5lib/runner-expected.txt:
* platform/chromium/html5lib/runner-expected.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@103013 268f45cc-cd09-0410-ab3c-d52691b4dbfc