https://bugs.webkit.org/show_bug.cgi?id=85664

Reviewed by Dan Bernstein.

Instead of going through all the history items in the back/forward list looking for cached pages, just iterate over the cached pages in the page.

* history/BackForwardController.cpp:
* history/BackForwardController.h:
* history/HistoryItem.cpp:
* history/HistoryItem.h:
* history/PageCache.cpp:
(WebCore::PageCache::markPagesForFullStyleRecalc):
(WebCore):
* history/PageCache.h:
(PageCache):
* page/Frame.cpp:
(WebCore::Frame::setPageAndTextZoomFactors):
* page/Page.cpp:
(WebCore::Page::setDeviceScaleFactor):
(WebCore::Page::setPagination):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@116167 268f45cc-cd09-0410-ab3c-d52691b4dbfc