Changed AudioPacket data to a repeated field.

remoting/proto/audio.proto

Index: remoting/proto/audio.proto
diff --git a/remoting/proto/audio.proto b/remoting/proto/audio.proto
index eabfcfeb55b31b949a3a070ac6161709ec921f5b..d23071cbdf3f82c0e009eb50f6da5cd442b60836 100644
--- a/remoting/proto/audio.proto
+++ b/remoting/proto/audio.proto
@@ -13,8 +13,11 @@ package remoting;
 message AudioPacket {
   optional int32 timestamp = 1 [default = 0];
 
-  // Data is always signed and represented using little endian.
-  optional bytes data = 2;
+  // Packets with raw data must have exactly one data field.
+  // For those packets, samples are signed and represented using little endian.
+  // Some encoders (eg. Speex) may add multiple data fields to separate encoded
+  // frames.
+  repeated bytes data = 2;
 
   enum Encoding {
     ENCODING_INVALID = -1;