Adds multiple forms of MediaStreamTrack constraints

third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl

Index: third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
diff --git a/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl b/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
index 04a3f33f9382e540c57d15343b5873d39051a8bf..b90448b5c8d6ae2a6904f7a778f7124c1fd071e6 100644
--- a/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
+++ b/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
@@ -4,16 +4,10 @@
 
 // https://w3c.github.io/mediacapture-main/getusermedia.html#idl-def-MediaTrackConstraintSet
 
-typedef ConstrainLongRange ConstrainLong;
-typedef ConstrainDoubleRange ConstrainDouble;
-typedef ConstrainBooleanParameters ConstrainBoolean;
-typedef ConstrainDOMStringParameters ConstrainDOMString;
-// The spec says that the typedefs should be:
-// typedef (long or ConstrainLongRange) ConstrainLong;
-// typedef (double or ConstrainDoubleRange) ConstrainDouble;
-// typedef (boolean or ConstrainBooleanParameters) ConstrainBoolean;
-// typedef (DOMString or sequence<DOMString> or ConstrainDomStringParameters) ConstrainDomString;
-// This is blocked on https://crbug.com/524424
+typedef (long or ConstrainLongRange) ConstrainLong;
+typedef (double or ConstrainDoubleRange) ConstrainDouble;
+typedef (boolean or ConstrainBooleanParameters) ConstrainBoolean;
+typedef (DOMString or sequence<DOMString> or ConstrainDOMStringParameters) ConstrainDOMString;
 
 dictionary MediaTrackConstraintSet {
     [RuntimeEnabled=MediaConstraints] ConstrainLong width;