Roll IDL to multivm@1467

modules/mediasource/SourceBuffer.idl

Index: modules/mediasource/SourceBuffer.idl
diff --git a/modules/mediasource/SourceBuffer.idl b/modules/mediasource/SourceBuffer.idl
index f254f032367312d103e8f99361467d52919bdb78..c6160bdea24e79c2b21090cea158813ae3859819 100644
--- a/modules/mediasource/SourceBuffer.idl
+++ b/modules/mediasource/SourceBuffer.idl
@@ -31,7 +31,7 @@
 [
     NoInterfaceObject,
     ActiveDOMObject,
-    EnabledAtRuntime=mediaSource
+    EnabledAtRuntime=MediaSource
 ] interface SourceBuffer : EventTarget {
 
     readonly attribute boolean updating;
@@ -52,6 +52,8 @@
     [RaisesException] void appendBuffer(ArrayBuffer data);
     [RaisesException] void appendBuffer(ArrayBufferView data);
 
+    [RaisesException, EnabledAtRuntime=stream] void appendStream(Stream stream, optional unsigned long long maxSize);
+
     // Abort the current segment append sequence.
     [RaisesException] void abort();
     [RaisesException] void remove(double start, double end);