Reviewed by Eric Seidel.

        REGRESSION(r69831): focus() in onkeypress discards input (affects chaseonline.chase.com)
        https://bugs.webkit.org/show_bug.cgi?id=52241

        The bug was caused by RenderTextControl::selection's creating a Range with m_insertText
        which is a shadow DOM div as both start and end containers. Fixed the bug by traversing
        through the descendents of m_innerText and using the right start and end containers to
        create a Range.

        Test: fast/forms/focus-change-on-keypress.html

        * rendering/RenderTextControl.cpp:
        (WebCore::setContainerAndOffsetForRange): Added; a helper function.
        (WebCore::RenderTextControl::selection): See above.
2011-01-12  Ryosuke Niwa  <rniwa@webkit.org>

        Reviewed by Eric Seidel.

        REGRESSION(r69831): focus() in onkeypress discards input (affects chaseonline.chase.com)
        https://bugs.webkit.org/show_bug.cgi?id=52241

        Added a test to ensure WebKit inserts the character typed by a user when focus's node
        is changed by a presskey event handler.

        * fast/forms/focus-change-on-keypress-expected.txt: Added.
        * fast/forms/focus-change-on-keypress.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75677 268f45cc-cd09-0410-ab3c-d52691b4dbfc