Re-land r9378 "Rename APM Config DelayCorrection to ExtendedFilter"

webrtc/modules/audio_processing/aec/aec_core.c

Index: webrtc/modules/audio_processing/aec/aec_core.c
diff --git a/webrtc/modules/audio_processing/aec/aec_core.c b/webrtc/modules/audio_processing/aec/aec_core.c
index d4e11dcc430ac06c7cf2c0fd77c4705f88521ec7..32266f4e32cbbf244cab3f06e2bf12e012d62cec 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.c
+++ b/webrtc/modules/audio_processing/aec/aec_core.c
@@ -1934,14 +1934,14 @@ int WebRtcAec_reported_delay_enabled(AecCore* self) {
   return self->reported_delay_enabled;
 }
 
-void WebRtcAec_enable_delay_correction(AecCore* self, int enable) {
+void WebRtcAec_enable_extended_filter(AecCore* self, int enable) {
   self->extended_filter_enabled = enable;
   self->num_partitions = enable ? kExtendedNumPartitions : kNormalNumPartitions;
   // Update the delay estimator with filter length.  See InitAEC() for details.
   WebRtc_set_allowed_offset(self->delay_estimator, self->num_partitions / 2);
 }
 
-int WebRtcAec_delay_correction_enabled(AecCore* self) {
+int WebRtcAec_extended_filter_enabled(AecCore* self) {
   return self->extended_filter_enabled;
 }