Remove DocumentWriter::setDecoder as a grep of WebKit shows no callers
https://bugs.webkit.org/show_bug.cgi?id=67803

Reviewed by Adam Barth.

Smells like dead code.

* loader/DocumentWriter.cpp:
* loader/DocumentWriter.h:

git-svn-id: svn://svn.chromium.org/blink/trunk@94800 bbb929c8-8fbe-4397-9dbb-9b2b20218538
void DocumentWriter::setDocumentWasLoadedAsPartOfNavigation()
{
    ASSERT(!m_parser->isStopped());
    m_parser->setDocumentWasLoadedAsPartOfNavigation();
}

void DocumentWriter::setDocumentWasLoadedAsPartOfNavigation()
{
    ASSERT(!m_parser->isStopped());
    m_parser->setDocumentWasLoadedAsPartOfNavigation();
}
