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This patch reenables the above test, as well as rewriting it to
no longer depend on the removed cast.streaming extension APIs and
moving it out of the extensions test folder path.

The performance test now performs the offer answer exchange and sets up
the receiver with the SSRC and AES key information from the OFFER. The
video embedded in the test has been moved to being generated in
JavaScript instead of native C++, fixing some playback issues.

This patch also readds a missing ConsumeVideoFrame trace event.

Note: to run the performance test use the following command:

./out/Default/browser_tests --gtest_filter="*CastV2PerformanceTest*" --full-performance-run --vmodule="*udp_transport_impl*=2,*performance_test.cc=2"

Bug: 974427
Change-Id: I73c90d3005e0f2c0bc66453c3585f246651bab7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2288636Reviewed-by: Christian Fremerey <chfremer@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Reviewed-by: Yuri Wiitala <miu@chromium.org>
Reviewed-by: Takumi Fujimoto <takumif@chromium.org>
Commit-Queue: Jordan Bayles <jophba@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806348}