Added more error checking for audio packets.

remoting/codec/audio_encoder_verbatim.cc

Index: remoting/codec/audio_encoder_verbatim.cc
diff --git a/remoting/codec/audio_encoder_verbatim.cc b/remoting/codec/audio_encoder_verbatim.cc
index 52e578a117a39266fd27024d276e15a1218865dd..696035e9f0d60b72632e5e1bec90008195a16c65 100644
--- a/remoting/codec/audio_encoder_verbatim.cc
+++ b/remoting/codec/audio_encoder_verbatim.cc
@@ -17,6 +17,9 @@ scoped_ptr<AudioPacket> AudioEncoderVerbatim::Encode(
     scoped_ptr<AudioPacket> packet) {
   DCHECK_EQ(AudioPacket::ENCODING_RAW, packet->encoding());
   DCHECK_EQ(1, packet->data_size());
+  DCHECK_NE(AudioPacket::SAMPLING_RATE_INVALID, packet->sampling_rate());
+  DCHECK_NE(AudioPacket::BYTES_PER_SAMPLE_INVALID, packet->bytes_per_sample());
+  DCHECK_NE(AudioPacket::CHANNELS_INVALID, packet->channels());
   return packet.Pass();
 }