https://bugs.webkit.org/show_bug.cgi?id=13631

Reviewed by Darin Adler.

No new tests. (No change in behavior, current tests pass).

* loader/DocumentLoader.cpp:
(WebCore::DocumentLoader::stopLoading): Adopt the new enum form for FrameLoader::stopLoading().

* loader/FrameLoader.cpp:
(WebCore::FrameLoader::stopLoading): Take an enum to decide whether to dispatch no unload events,
  only unload, or unload and pagehide.
(WebCore::FrameLoader::closeURL):
(WebCore::FrameLoader::scheduleRedirection):
(WebCore::FrameLoader::cachePageForHistoryItem): Call pageHidden().
(WebCore::FrameLoader::pageHidden): Add to dispatch the pagehide event to all frames in the case
  where a page is added to the PageCache.
* loader/FrameLoader.h:

* loader/FrameLoaderTypes.h: Add an UnloadEventPolicy enum.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@48001 268f45cc-cd09-0410-ab3c-d52691b4dbfc