Remove various IDs:

- AudioFrame
- AudioCodingModule

BUG=webrtc:4690
TBR=kwiberg@webrtc.org

Review-Url: https://codereview.webrtc.org/3019543002
Cr-Commit-Position: refs/heads/master@{#20005}
diff --git a/modules/audio_coding/test/opus_test.cc b/modules/audio_coding/test/opus_test.cc
index 7b54668..b7acc0f 100644
--- a/modules/audio_coding/test/opus_test.cc
+++ b/modules/audio_coding/test/opus_test.cc
@@ -27,7 +27,7 @@
 namespace webrtc {
 
 OpusTest::OpusTest()
-    : acm_receiver_(AudioCodingModule::Create(0)),
+    : acm_receiver_(AudioCodingModule::Create()),
       channel_a2b_(NULL),
       counter_(0),
       payload_type_(255),