This test checks select attribute of content element is valid.

This test checks select attribute of content element is valid.
https://bugs.webkit.org/show_bug.cgi?id=65595

Reviewed by Dimitri Glazkov.

Source/WebCore:

This change introduces FrameTree::scopedChild() and
FrameTree::scopedChild(), which can be used for scope-aware
frame lookup. Using these, the named accessor and the indexed
acceccor on Document, and Window.length are now TreeScope
aware. They don't count iframes in Shadow DOM.

This change also removes FrameTree::m_childCount since
Frame::childCount() is no longer in the hot
path. m_scopedChildCount is added instead.

Test: fast/dom/shadow/iframe-shadow.html

* bindings/js/JSDOMWindowCustom.cpp:
(WebCore::childFrameGetter):
(WebCore::indexGetter):
(WebCore::JSDOMWindow::getOwnPropertySlot):
(WebCore::JSDOMWindow::getOwnPropertyDescriptor):
* bindings/v8/custom/V8DOMWindowCustom.cpp:
(WebCore::V8DOMWindow::indexedPropertyGetter):
(WebCore::V8DOMWindow::namedPropertyGetter):
(WebCore::V8DOMWindow::namedSecurityCheck):
(WebCore::V8DOMWindow::indexedSecurityCheck):
* page/DOMWindow.cpp:
(WebCore::DOMWindow::length):
* page/Frame.cpp:
(WebCore::Frame::inScope):
(WebCore):
* page/Frame.h:
(WebCore):
(Frame):
* page/FrameTree.cpp:
(WebCore::FrameTree::actuallyAppendChild):
(WebCore::FrameTree::removeChild):
(WebCore::FrameTree::scopedChild):
(WebCore):
(WebCore::FrameTree::scopedChildCount):
(WebCore::FrameTree::childCount):
* page/FrameTree.h:
(WebCore):
(FrameTree):
(WebCore::FrameTree::FrameTree):

LayoutTests:

* fast/dom/shadow/iframe-shadow-expected.txt: Added.
* fast/dom/shadow/iframe-shadow.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108700 268f45cc-cd09-0410-ab3c-d52691b4dbfc