Add 'cbcs' encryption scheme support in Android media.

media/video/video_decode_accelerator.cc

Index: media/video/video_decode_accelerator.cc
diff --git a/media/video/video_decode_accelerator.cc b/media/video/video_decode_accelerator.cc
index 02901535dacdec979232af7b0bb5a5cb6baacba1..9062837faf84b6b65f2f42a7eaaa5f6eb92487ad 100644
--- a/media/video/video_decode_accelerator.cc
+++ b/media/video/video_decode_accelerator.cc
@@ -9,13 +9,15 @@
 
 namespace media {
 
+VideoDecodeAccelerator::Config::Config() = default;
+
 VideoDecodeAccelerator::Config::Config(VideoCodecProfile video_codec_profile)
     : profile(video_codec_profile) {}
 
 std::string VideoDecodeAccelerator::Config::AsHumanReadableString() const {
   std::ostringstream s;
   s << "profile: " << GetProfileName(profile) << " encrypted? "
-    << (is_encrypted ? "true" : "false");
+    << (is_encrypted() ? "true" : "false");
   return s.str();
 }