Add 'cbcs' encryption scheme support in Android media.

media/gpu/vt_video_decode_accelerator_mac.cc

Index: media/gpu/vt_video_decode_accelerator_mac.cc
diff --git a/media/gpu/vt_video_decode_accelerator_mac.cc b/media/gpu/vt_video_decode_accelerator_mac.cc
index ca5effe784efc55df6b691b9974454d8a88c2995..f962efa4aacd1eee7782f5d84448124957481480 100644
--- a/media/gpu/vt_video_decode_accelerator_mac.cc
+++ b/media/gpu/vt_video_decode_accelerator_mac.cc
@@ -312,7 +312,7 @@ bool VTVideoDecodeAccelerator::Initialize(const Config& config,
     return false;
   }
 
-  if (config.is_encrypted) {
+  if (config.is_encrypted()) {
     NOTREACHED() << "Encrypted streams are not supported for this VDA";
     return false;
   }