Switch to using AudioEncoderPcm16B instead of ACMPCM16B

This change switches from the old codec wrapper ACMPCM16B to the new
AudioEncoderPcm16B wrapped in an ACMGenericCodecWrapper.

BUG=4228
COAUTHOR=kwiberg@webrtc.org
R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/33249004

Cr-Commit-Position: refs/heads/master@{#8324}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8324 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc b/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
index 98440b0..3cc124f 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
@@ -746,46 +746,9 @@
     return new ACMCNG(codec_id, enable_red);
   } else if (!STR_CASE_CMP(codec_inst.plname, "L16")) {
 #ifdef WEBRTC_CODEC_PCM16
-    // For L16 we need to check sampling frequency to know what codec to create.
-    int codec_id;
-    if (codec_inst.channels == 1) {
-      switch (codec_inst.plfreq) {
-        case 8000: {
-          codec_id = kPCM16B;
-          break;
-        }
-        case 16000: {
-          codec_id = kPCM16Bwb;
-          break;
-        }
-        case 32000: {
-          codec_id = kPCM16Bswb32kHz;
-          break;
-        }
-        default: {
-          return NULL;
-        }
-      }
-    } else {
-      switch (codec_inst.plfreq) {
-        case 8000: {
-          codec_id = kPCM16B_2ch;
-          break;
-        }
-        case 16000: {
-          codec_id = kPCM16Bwb_2ch;
-          break;
-        }
-        case 32000: {
-          codec_id = kPCM16Bswb32kHz_2ch;
-          break;
-        }
-        default: {
-          return NULL;
-        }
-      }
-    }
-    return new ACMPCM16B(codec_id, enable_red);
+    return new ACMGenericCodecWrapper(codec_inst, cng_pt_nb, cng_pt_wb,
+                                      cng_pt_swb, cng_pt_fb, enable_red,
+                                      red_payload_type);
 #endif
   } else if (!STR_CASE_CMP(codec_inst.plname, "telephone-event")) {
 #ifdef WEBRTC_CODEC_AVT