AcmReceiver: Ask NetEq to delete all decoders at once instead of one by one

webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc

Index: webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
diff --git a/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc b/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
index c74342bb848f34a7221fb3b5cd3d4cbcf7cb294e..953606ad50cf9742a7d65b1f22fb2c6554cb1baa 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -230,6 +230,12 @@ TEST_F(NetEqImplTest, RemovePayloadType) {
   EXPECT_EQ(NetEq::kFail, neteq_->RemovePayloadType(rtp_payload_type));
 }
 
+TEST_F(NetEqImplTest, RemoveAllPayloadTypes) {
+  CreateInstance();
+  EXPECT_CALL(*mock_decoder_database_, RemoveAll()).WillOnce(Return());
+  neteq_->RemoveAllPayloadTypes();
+}
+
 TEST_F(NetEqImplTest, InsertPacket) {
   CreateInstance();
   const size_t kPayloadLength = 100;