https://bugs.webkit.org/show_bug.cgi?id=98416

Reviewed by Adam Barth.

Updated the MediaStream constructor to support the more general argument
list from the latest Media Capture and Streams specification:
http://dev.w3.org/2011/webrtc/editor/getusermedia.html

Source/WebCore:

Added more test cases to existing tests.

* Modules/mediastream/MediaStream.cpp:
(WebCore::containsSource):
(WebCore):
(WebCore::processTrack):
(WebCore::createFromSourceVectors):
(WebCore::MediaStream::create):
* Modules/mediastream/MediaStream.h:
* Modules/mediastream/MediaStream.idl:

LayoutTests:

* fast/js/constructor-length.html:
* fast/mediastream/MediaStreamConstructor-expected.txt:
* fast/mediastream/MediaStreamConstructor.html:
* platform/blackberry/fast/js/constructor-length-expected.txt:
* platform/chromium/fast/js/constructor-length-expected.txt:
* platform/gtk/fast/js/constructor-length-expected.txt:
* platform/mac/fast/js/constructor-length-expected.txt:
* platform/qt/fast/js/constructor-length-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138354 268f45cc-cd09-0410-ab3c-d52691b4dbfc