WebRTC-DeprecateGlobalFieldTrialString/Enabled/ - part 10/inf

This patch takes a stab at modules/video_coding,
but reaches only about half.

Bug: webrtc:10335
Change-Id: I0d47d0468b818145470c51ae4e8e75ff58d499ae
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/256112
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36335}
diff --git a/modules/video_coding/generic_decoder.cc b/modules/video_coding/generic_decoder.cc
index 4b55f85b..78d77d3 100644
--- a/modules/video_coding/generic_decoder.cc
+++ b/modules/video_coding/generic_decoder.cc
@@ -23,12 +23,13 @@
 #include "rtc_base/time_utils.h"
 #include "rtc_base/trace_event.h"
 #include "system_wrappers/include/clock.h"
-#include "system_wrappers/include/field_trial.h"
 
 namespace webrtc {
 
-VCMDecodedFrameCallback::VCMDecodedFrameCallback(VCMTiming* timing,
-                                                 Clock* clock)
+VCMDecodedFrameCallback::VCMDecodedFrameCallback(
+    VCMTiming* timing,
+    Clock* clock,
+    const WebRtcKeyValueConfig& field_trials)
     : _clock(clock),
       _timing(timing),
       _timestampMap(kDecoderFrameMemoryLength),
@@ -40,10 +41,10 @@
       _clock->CurrentNtpInMilliseconds() - _clock->TimeInMilliseconds();
 
   ParseFieldTrial({&_extra_decode_time},
-                  field_trial::FindFullName("WebRTC-SlowDownDecoder"));
+                  field_trials.Lookup("WebRTC-SlowDownDecoder"));
   ParseFieldTrial({&low_latency_renderer_enabled_,
                    &low_latency_renderer_include_predecode_buffer_},
-                  field_trial::FindFullName("WebRTC-LowLatencyRenderer"));
+                  field_trials.Lookup("WebRTC-LowLatencyRenderer"));
 }
 
 VCMDecodedFrameCallback::~VCMDecodedFrameCallback() {}