The P2PTransportChannel will eventually inherit from IceTransportInternal instead of TransportChannelImpl.
However, the Chromium/remoting depends on TransportChannel and TransportChannelImpl.
The solution to work around this:
Step1:
Make a WebRTC CL to introduce IceTransportInternal and IceTransportInternal2 by type-defining
TransportChannel and TransportChannelImpl.
Step2:
Make a Chromium CL to replace the TransportChannel and TransportChannelImpl with
IceTransportInternal and IceTransportInternal2.
Step3:
Make a WebRTC to redefine IceTransportInternal2 to be IceTransportInternal and switch the base
class of P2PTransportChannel with IceTransportInternal.
Step4"
Make a Chromium CL to remove the IceTransportInternal2.
This CL is the Step1. The real IceTransportInternal implementation
is commented out temporarily.
BUG=none
Review-Url: https://codereview.webrtc.org/2598103003
Cr-Commit-Position: refs/heads/master@{#15824}
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