[Qt] Unreviewed gardening. Rebase failing tests.

Patch by Gabor Abraham <abrhm@inf.u-szeged.hu> on 2013-07-19

* platform/qt-5.0-wk2/tables/mozilla/marvin/backgr_index-expected.png:
* platform/qt-5.0-wk2/tables/mozilla/marvin/backgr_index-expected.txt: Copied from LayoutTests/platform/qt/tables/mozilla/marvin/backgr_index-expected.txt.
* platform/qt/fast/lists/inlineBoxWrapperNullCheck-expected.txt:
* platform/qt/http/tests/security/contentSecurityPolicy/object-src-none-blocked-expected.txt:
* platform/qt/tables/mozilla/marvin/backgr_index-expected.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152887 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Use explicit HTMLFrameElementBase cast and introduce toHTMLFrameElementBase
https://bugs.webkit.org/show_bug.cgi?id=118873

Reviewed by Ryosuke Niwa.

It should be HTMLFrameElementBase that embraces both HTMLFrameElement and HTMLIFrameElement.
This also makes correct toFooElement possible.
Next, to avoid direct use of static_cast, this patch introduces toHTMLFrameElementBase for code cleanup.

* editing/FrameSelection.cpp:
(WebCore::scanForForm):
* html/HTMLBodyElement.cpp:
(WebCore::HTMLBodyElement::didNotifySubtreeInsertions):
* html/HTMLFrameElementBase.h:
(WebCore::toHTMLFrameElementBase):
* loader/SubframeLoader.cpp:
(WebCore::SubframeLoader::loadSubframe):
* page/EventHandler.cpp:
(WebCore::targetIsFrame):
* page/FrameView.cpp:
(WebCore::FrameView::init):
* rendering/RenderFrameBase.cpp:
(WebCore::RenderFrameBase::layoutWithFlattening):
* rendering/RenderLayer.cpp:
(WebCore::frameElementAndViewPermitScroll):
(WebCore::RenderLayer::scrollRectToVisible):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152889 268f45cc-cd09-0410-ab3c-d52691b4dbfc