Revert r9378 "Rename APM Config DelayCorrection to ExtendedFilter"

This reverts commit 5f4b7e2873864c61e2ad6d88679dcd5d321bfd16, since it
broke some of the build bots.

BUG=4696
TBR=bjornv@webrtc.org

Review URL: https://codereview.webrtc.org/1166463006

Cr-Commit-Position: refs/heads/master@{#9380}

webrtc/modules/audio_processing/test/process_test.cc

@@ -258,7 +258,7 @@ void void_main(int argc, char* argv[]) {
                         suppression_level)));
 
     } else if (strcmp(argv[i], "--extended_filter") == 0) {
-      config.Set<ExtendedFilter>(new ExtendedFilter(true));
+      config.Set<DelayCorrection>(new DelayCorrection(true));
 
     } else if (strcmp(argv[i], "--no_reported_delay") == 0) {
       config.Set<ReportedDelay>(new ReportedDelay(false));