Media Source dispatches inband text tracks

webkit/media/texttrack_impl.cc

Index: webkit/media/texttrack_impl.cc
diff --git a/webkit/media/texttrack_impl.cc b/webkit/media/texttrack_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b07e2a986ccd3b3e82c8a614b48c5cff7866390e
--- /dev/null
+++ b/webkit/media/texttrack_impl.cc
@@ -0,0 +1,32 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "webkit/media/texttrack_impl.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebInbandTextTrackClient.h"
+#include "webkit/media/webinbandtexttrack_impl.h"
+
+namespace webkit_media {
+
+TextTrackImpl::TextTrackImpl(WebInbandTextTrackImpl* text_track)
+    : text_track_(text_track) {
+  // This impl object assumes owndership of the text_track object.

[acolwell GONE FROM CHROMIUM, 2013/05/17 16:32:08]

nit:s/owndership/ownership/ 

[Matthew Heaney (Chromium), 2013/05/18 01:35:48]

Done.

+}
+
+TextTrackImpl::~TextTrackImpl() {
+  delete text_track_;
+}
+
+void TextTrackImpl::addWebVTTCue(const base::TimeDelta& start,
+                                 const base::TimeDelta& end,
+                                 const std::string& id,
+                                 const std::string& content,
+                                 const std::string& settings) {
+  text_track_->client()->addWebVTTCue(start.InSecondsF(),

[acolwell GONE FROM CHROMIUM, 2013/05/17 16:32:08]

nit: I think you may need a null check on client() since I think it might be
possible for the client to get cleared before this object is destroyed.

[Matthew Heaney (Chromium), 2013/05/18 01:35:48]

Done.

+                                      end.InSecondsF(),
+                                      WebKit::WebString::fromUTF8(id),
+                                      WebKit::WebString::fromUTF8(content),
+                                      WebKit::WebString::fromUTF8(settings));
+}
+
+}  // namespace webkit_media