Add Chromium-side support for SourceBuffer.appendWindowStart and SourceBuffer.appendWindowEnd.

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 828d3181ac9724c1ffc8a2c0762b8702ff349f85..7fb71556025aa87a94e52ba3cf3144c2d7399956 100644
--- a/media/webm/webm_stream_parser.cc
+++ b/media/webm/webm_stream_parser.cc
@@ -29,8 +29,7 @@ WebMStreamParser::~WebMStreamParser() {
 
 void WebMStreamParser::Init(const InitCB& init_cb,
                             const NewConfigCB& config_cb,
-                            const NewBuffersCB& audio_cb,
-                            const NewBuffersCB& video_cb,
+                            const NewBuffersCB& new_buffers_cb,
                             const NewTextBuffersCB& text_cb,
                             const NeedKeyCB& need_key_cb,
                             const AddTextTrackCB& add_text_track_cb,
@@ -41,7 +40,7 @@ void WebMStreamParser::Init(const InitCB& init_cb,
   DCHECK(init_cb_.is_null());
   DCHECK(!init_cb.is_null());
   DCHECK(!config_cb.is_null());
-  DCHECK(!audio_cb.is_null() || !video_cb.is_null());
+  DCHECK(!new_buffers_cb.is_null());
   DCHECK(!text_cb.is_null());
   DCHECK(!need_key_cb.is_null());
   DCHECK(!new_segment_cb.is_null());
@@ -50,8 +49,7 @@ void WebMStreamParser::Init(const InitCB& init_cb,
   ChangeState(kParsingHeaders);
   init_cb_ = init_cb;
   config_cb_ = config_cb;
-  audio_cb_ = audio_cb;
-  video_cb_ = video_cb;
+  new_buffers_cb_ = new_buffers_cb;
   text_cb_ = text_cb;
   need_key_cb_ = need_key_cb;
   add_text_track_cb_ = add_text_track_cb;
@@ -291,11 +289,10 @@ int WebMStreamParser::ParseCluster(const uint8* data, int size) {
     waiting_for_buffers_ = false;
   }
 
-  if (!audio_buffers.empty() && !audio_cb_.Run(audio_buffers))
-    return -1;
-
-  if (!video_buffers.empty() && !video_cb_.Run(video_buffers))
+  if ((!audio_buffers.empty() || !video_buffers.empty()) &&
+      !new_buffers_cb_.Run(audio_buffers, video_buffers)) {
     return -1;
+  }
 
   WebMClusterParser::TextTrackIterator text_track_iter =
     cluster_parser_->CreateTextTrackIterator();