Update a comment, mentioning a newly filed bug.

        * platform/wk2/TestExpectations:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149141 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Media elements shouldn't resume playback when a page is restored from the back/forward cache if the WKView isn't in a window
https://bugs.webkit.org/show_bug.cgi?id=115191

Reviewed by Eric Carlson.

If a page is suspended, then resumed when its WebView or WKView has been removed from a window,
the page's media elements will unpause. Check whether media is allowed to start during resume()
via Page::canMediaStart() and if not, register for mediaCanStart notifications. Then, in
mediaCanStart() if the media is force-paused, unpause it.

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::suspend):
(WebCore::HTMLMediaElement::resume):
(WebCore::HTMLMediaElement::mediaCanStart):
* html/HTMLMediaElement.h:
(WebCore::HTMLMediaElement::pageConsentRequiredForResume):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149142 268f45cc-cd09-0410-ab3c-d52691b4dbfc