This reverts commit 320c57b7c6bf68d8612a4f135f44b3d29e802113. Reason for revert: Breaks CI tests: https://ci.chromium.org/ui/p/webrtc/builders/ci/Linux32%20Release/27236/overview All CI tests: https://ci.chromium.org/p/webrtc/g/ci/console Error is of the following type: ``` ../../modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc:195: Failure Expected equality of these values: 1u Which is: 1 encoded_info_.encoded_bytes Which is: 2 Stack trace: 0x56b298d9: webrtc::AudioEncoderCopyRedTest_CheckPayloadSizesSingle_Test::TestBody() 0x572fe317: testing::internal::HandleExceptionsInMethodIfSupported<>() 0x572fe1d4: testing::Test::Run() 0x572ff2ee: testing::TestInfo::Run() ``` Original change's description: > red: remove special-casing of no-redundancy > > removes the special-casing of not sending a RED header when there is no redundant payload. > This avoids switching back and forth between the primary and the red payload format (primarily at the start of the connection). > > BUG=webrtc:11640 > > Change-Id: I8e0044bef1ed7c4168d9527645522392db2ed068 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/220932 > Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org> > Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> > Commit-Queue: Henrik Lundin <henrik.lundin@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#34703} TBR=henrik.lundin@webrtc.org,devicentepena@webrtc.org,minyue@webrtc.org,philipp.hancke@googlemail.com,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com Change-Id: Ide409232720df32b24022f99228f3b6ae81f06fe No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: webrtc:11640 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/228421 Reviewed-by: Andrey Logvin <landrey@webrtc.org> Commit-Queue: Andrey Logvin <landrey@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34707}