Add is_encrypted() in VideoDecoderConfig.

media/webm/webm_stream_parser.cc

Index: media/webm/webm_stream_parser.cc
diff --git a/media/webm/webm_stream_parser.cc b/media/webm/webm_stream_parser.cc
index db990cd408a7f8033c3cca1d2be623e5576e5d52..8b4630d4733bdcdb1a4a4ac58f0701768eb742ff 100644
--- a/media/webm/webm_stream_parser.cc
+++ b/media/webm/webm_stream_parser.cc
@@ -352,14 +352,20 @@ int WebMStreamParser::ParseInfoAndTracks(const uint8* data, int size) {
     return -1;
   }
 
+  // TODO(xhwang): Support decryption of audio (see http://crbug.com/123421).
+  bool is_audio_encrypted = false;
+  bool is_video_encrypted = !tracks_parser.video_encryption_key_id().empty();
+
   if (!config_cb_.Run(config_helper.audio_config(),
-                      config_helper.video_config())) {
+                      config_helper.video_config(),
+                      is_audio_encrypted,
+                      is_video_encrypted)) {
     DVLOG(1) << "New config data isn't allowed.";
     return -1;
   }
 
   // TODO(xhwang): Support decryption of audio (see http://crbug.com/123421).
-  if (!tracks_parser.video_encryption_key_id().empty()) {
+  if (is_video_encrypted) {
     std::string key_id = tracks_parser.video_encryption_key_id();
     int key_id_size = key_id.size();
     CHECK_GT(key_id_size, 0);