Refactoring: Move m_mayDisplaySeamlesslyWithParent down to Document

The member is used only in Document, thus no reason to
stay in SecurityContext.

TEST=none
BUG=none
R=haraken@chromium.org, abarth, haraken, hayato

Review URL: https://codereview.chromium.org/27615003

git-svn-id: svn://svn.chromium.org/blink/trunk@159829 bbb929c8-8fbe-4397-9dbb-9b2b20218538
void Document::setParsing(bool b)
{
    m_bParsing = b;

    if (m_bParsing && !m_sharedObjectPool)
        m_sharedObjectPool = DocumentSharedObjectPool::create();

    if (!m_bParsing && view())
        view()->scheduleRelayout();
}

void Document::setParsing(bool b)
{
    m_bParsing = b;

    if (m_bParsing && !m_sharedObjectPool)
        m_sharedObjectPool = DocumentSharedObjectPool::create();

    if (!m_bParsing && view())
        view()->scheduleRelayout();
}
