!!! On Mac only. !!!

What steps will reproduce the problem?
(1) Build content_unittests.
(2) Run it with --gtest_filter=WebRtcInternalsTest.EnsureLogIsRemovedWhenObserverIsRemoved
(3) Reproduction!

What is the expected result?
Test just runs.

What happens instead?
An error is shown along the lines of "Class RTCDispatcher is implemented in both /Users/eladalon/chromium/src/out/mac_dbg/./libcontent.dylib (0x11ea7e518) and /Users/eladalon/chromium/src/out/mac_dbg/content_unittests (0x107445ed8). One of the two will be used. Which one is undefined."