Fix build failure

There was a build failure due to including checks.h. Removed the include.
TBR=kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/48639004

Cr-Commit-Position: refs/heads/master@{#8825}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8825 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
index 64a2f51..62b5ecb 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
@@ -15,7 +15,6 @@
 #include <algorithm>  // sort
 #include <vector>
 
-#include "webrtc/base/checks.h"
 #include "webrtc/base/format_macros.h"
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 #include "webrtc/common_types.h"
@@ -480,7 +479,7 @@
                               uint8_t payload_type,
                               int channels,
                               AudioDecoder* audio_decoder) {
-  CHECK_GE(acm_codec_id, 0);
+  assert(acm_codec_id >= 0);
   NetEqDecoder neteq_decoder = ACMCodecDB::neteq_decoders_[acm_codec_id];
 
   // Make sure the right decoder is registered for Opus.
@@ -626,7 +625,7 @@
     return -1;
   }
   auto it = decoders_.find(last_audio_decoder_);
-  CHECK(it != decoders_.end());
+  assert(it != decoders_.end());
   memcpy(codec, &ACMCodecDB::database_[last_audio_decoder_], sizeof(CodecInst));
   codec->pltype = it->second.payload_type;
   codec->channels = it->second.channels;