Fix WebRTC fuzzers tests in Chromium missing field trial implementation
Fix WebRTC fuzzers tests in Chromium missing field trial implementation

Follow-up to https://webrtc-review.googlesource.com/c/src/+/100940.

When WebRTC fuzzers tests are built on Chromium bots they need to link
with Chromium's implementation of field_trial.

This is for fixing the roll out WebRTC into Chromium. Example failure:
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-libfuzzer-asan-rel/4551

TBR=phoglund@webrtc.org

Bug: webrtc:9631
Change-Id: I353a2d293beafe016ce0c03d88e09fc5af23598f
Reviewed-on: https://webrtc-review.googlesource.com/101102
Commit-Queue: Christian Fremerey <c19eb80f0993c83392e66743f8bb19e5e76db01d@webrtc.org>
Reviewed-by: Christian Fremerey <c19eb80f0993c83392e66743f8bb19e5e76db01d@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#24778}
TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc