https://bugs.webkit.org/show_bug.cgi?id=124369

Patch by Thiago de Barros Lacerda <thiago.lacerda@openbossa.org> on 2013-11-15
Reviewed by Eric Carlson.

According to the spec the RTCIceCandidateInit parameter in RTCSessionDescription constructor is optional,
which must not be nullable, and, if passed, must be a valid Dictionary. If the keys are not present, the string
object that stores them in the RTCIceCandidate class, must be null in those cases. Also, if a key is present
and its value is not valid an exception must be raised.

Source/WebCore:

Existing test was updated.

* GNUmakefile.list.am:
* Modules/mediastream/RTCIceCandidate.cpp:
(WebCore::RTCIceCandidate::create):
* Modules/mediastream/RTCIceCandidate.idl:
* UseJSC.cmake:
* WebCore.vcxproj/WebCore.vcxproj:
* WebCore.vcxproj/WebCore.vcxproj.filters:
* WebCore.xcodeproj/project.pbxproj:
* bindings/js/JSRTCIceCandidateCustom.cpp: Added.
(WebCore::JSRTCIceCandidateConstructor::constructJSRTCIceCandidate):

LayoutTests:

* fast/mediastream/RTCIceCandidate-expected.txt:
* fast/mediastream/RTCIceCandidate.html:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@159349 268f45cc-cd09-0410-ab3c-d52691b4dbfc