Support (E)AC3 passthrough

media/base/sample_format.cc

Index: media/base/sample_format.cc
diff --git a/media/base/sample_format.cc b/media/base/sample_format.cc
index 0ee7f5e17b788c73ae6620321788047f1fd03387..5e5de6280c35d82cabfaf1e5f8b79a19701d5466 100644
--- a/media/base/sample_format.cc
+++ b/media/base/sample_format.cc
@@ -13,6 +13,7 @@ int SampleFormatToBytesPerChannel(SampleFormat sample_format) {
     case kUnknownSampleFormat:
       return 0;
     case kSampleFormatU8:
+    case kSampleFormatRaw:
       return 1;
     case kSampleFormatS16:
     case kSampleFormatPlanarS16:
@@ -49,6 +50,8 @@ const char* SampleFormatToString(SampleFormat sample_format) {
       return "Float 32-bit planar";
     case kSampleFormatPlanarS32:
       return "Signed 32-bit planar";
+    case kSampleFormatRaw:
+      return "Raw compressed bitstream";
   }
   NOTREACHED() << "Invalid sample format provided: " << sample_format;
   return "";
@@ -66,6 +69,7 @@ bool IsPlanar(SampleFormat sample_format) {
     case kSampleFormatS24:
     case kSampleFormatS32:
     case kSampleFormatF32:
+    case kSampleFormatRaw:
       return false;
   }
 
@@ -80,6 +84,7 @@ bool IsInterleaved(SampleFormat sample_format) {
     case kSampleFormatS24:
     case kSampleFormatS32:
     case kSampleFormatF32:
+    case kSampleFormatRaw:
       return true;
     case kUnknownSampleFormat:
     case kSampleFormatPlanarS16: