Add live mode detection in WebM MediaSource parser.

media/base/video_decoder_config.cc

Index: media/base/video_decoder_config.cc
diff --git a/media/base/video_decoder_config.cc b/media/base/video_decoder_config.cc
index d2b6e410103e4a066c9b971a9376a30d3caa48c9..de4dcf84a50c9f77acd47f07c2dbf7b15fe7138e 100644
--- a/media/base/video_decoder_config.cc
+++ b/media/base/video_decoder_config.cc
@@ -24,9 +24,10 @@ VideoDecoderConfig::VideoDecoderConfig(VideoCodec codec,
                                        const gfx::Size& natural_size,
                                        const uint8* extra_data,
                                        size_t extra_data_size,
-                                       bool is_encrypted) {
+                                       bool is_encrypted,
+                                       bool low_delay) {
   Initialize(codec, profile, format, coded_size, visible_rect, natural_size,
-             extra_data, extra_data_size, is_encrypted, true);
+             extra_data, extra_data_size, is_encrypted, low_delay, true);
 }
 
 VideoDecoderConfig::~VideoDecoderConfig() {}
@@ -62,6 +63,7 @@ void VideoDecoderConfig::Initialize(VideoCodec codec,
                                     const uint8* extra_data,
                                     size_t extra_data_size,
                                     bool is_encrypted,
+                                    bool low_delay,
                                     bool record_stats) {
   CHECK((extra_data_size != 0) == (extra_data != NULL));
 
@@ -88,6 +90,7 @@ void VideoDecoderConfig::Initialize(VideoCodec codec,
   natural_size_ = natural_size;
   extra_data_.assign(extra_data, extra_data + extra_data_size);
   is_encrypted_ = is_encrypted;
+  low_delay_ = low_delay;
 }
 
 bool VideoDecoderConfig::IsValidConfig() const {