Default FrameBuffer3

Last attempt resulted in some regressions in low-bw scenarios. These
should have been fixed with bugs.webrtc.org/14168.

Bug: webrtc:14003
Change-Id: Iaab954b7f9a390fbfc96a9cf0dacb3a950157c49
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/265865
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37240}
diff --git a/video/frame_buffer_proxy.cc b/video/frame_buffer_proxy.cc
index f69d9da..5bf2e22 100644
--- a/video/frame_buffer_proxy.cc
+++ b/video/frame_buffer_proxy.cc
@@ -543,7 +543,7 @@
 
 FrameBufferArm ParseFrameBufferFieldTrial(const FieldTrialsView& field_trials) {
   webrtc::FieldTrialEnum<FrameBufferArm> arm(
-      "arm", FrameBufferArm::kFrameBuffer2,
+      "arm", FrameBufferArm::kFrameBuffer3,
       {
           {"FrameBuffer2", FrameBufferArm::kFrameBuffer2},
           {"FrameBuffer3", FrameBufferArm::kFrameBuffer3},