[chromium] MediaStream API: Add missing WebRTCPeerConnectionHandlerClient::didAddRemoteDataChannel
https://bugs.webkit.org/show_bug.cgi?id=102386

Reviewed by Adam Barth.

Source/Platform:

* chromium/public/WebRTCPeerConnectionHandlerClient.h:
(WebRTCPeerConnectionHandlerClient):

Source/WebCore:

Existing tests expanded to cover patch.

* platform/mediastream/RTCDataChannelDescriptor.cpp:
(WebCore::RTCDataChannelDescriptor::RTCDataChannelDescriptor):
(WebCore::RTCDataChannelDescriptor::readyStateChanged):
* platform/mediastream/chromium/RTCPeerConnectionHandlerChromium.cpp:
(WebCore::RTCPeerConnectionHandlerChromium::didAddRemoteDataChannel):
(WebCore):
* platform/mediastream/chromium/RTCPeerConnectionHandlerChromium.h:
(WebKit):
(RTCPeerConnectionHandlerChromium):

Tools:

Adding mock data channel functionality.

* DumpRenderTree/chromium/MockWebRTCPeerConnectionHandler.cpp:
(MockWebRTCPeerConnectionHandler::openDataChannel):

LayoutTests:

* fast/mediastream/RTCPeerConnection-datachannel.html:
* fast/mediastream/RTCPeerConnection-datachannel-expected.txt:


git-svn-id: https://svn.webkit.org/repository/webkit/trunk/Source/Platform/chromium/public@134970 268f45cc-cd09-0410-ab3c-d52691b4dbfc