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        Reviewed by Eric Carlson.

        MediaPlayerPrivateAVFoundation does not change rate due to setRate().
        https://bugs.webkit.org/show_bug.cgi?id=57919

        * media/video-set-rate-from-pause-expected.txt: Added.
        * media/video-set-rate-from-pause.html: Added.
2011-04-06  Jer Noble  <jer.noble@apple.com>

        Reviewed by Eric Carlson.

        MediaPlayerPrivateAVFoundation does not change rate due to setRate().
        https://bugs.webkit.org/show_bug.cgi?id=57919

        Test: media/video-set-rate-from-pause.html

        The base class of MediaPlayerPrivateAVFoundation does not actually change the rate
        of the media; instead a subclass must do that work.  So when setRate() is called,
        inform a subclass through a new pure virtual updateRate() function that there's
        work to be done.

        * platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.cpp:
        (WebCore::MediaPlayerPrivateAVFoundation::setRate): Call updateRate()
        * platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.h:
        * platform/graphics/avfoundation/MediaPlayerPrivateAVFoundationObjC.h:
        * platform/graphics/avfoundation/MediaPlayerPrivateAVFoundationObjC.mm:
        (WebCore::MediaPlayerPrivateAVFoundationObjC::updateRate): Added.  Set the requested rate.

git-svn-id: svn://svn.chromium.org/blink/trunk@83134 bbb929c8-8fbe-4397-9dbb-9b2b20218538