Make [TypeChecking=Interface] the default

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

Index: third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.idl
diff --git a/third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.idl b/third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.idl
index 658e8b8a30516e20dd91906f2c809cac96315dd3..60e0ba9a49a03cfbb3a01f5b365f75e9706a51a8 100644
--- a/third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.idl
+++ b/third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.idl
@@ -82,7 +82,7 @@ enum RTCIceConnectionState {
     // readonly attribute RTCSessionDescription? currentRemoteDescription;
     // readonly attribute RTCSessionDescription? pendingRemoteDescription;
     // TODO(guidou): addIceCandidate() should return a Promise.
-    [RaisesException] void addIceCandidate(RTCIceCandidate candidate);
+    [RaisesException, LegacyInterfaceTypeChecking] void addIceCandidate(RTCIceCandidate candidate);
     readonly attribute RTCSignalingState signalingState;
     readonly attribute RTCIceGatheringState iceGatheringState;
     readonly attribute RTCIceConnectionState iceConnectionState;
@@ -101,18 +101,18 @@ enum RTCIceConnectionState {
     // TODO(guidou): The failureCallback argument should be non-optional.
     [RaisesException] void createOffer(RTCSessionDescriptionCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback, optional Dictionary rtcOfferOptions);
     // TODO(guidou): None of the arguments should be optional.
-    [RaisesException] void setLocalDescription(RTCSessionDescription description, [Default=Undefined] optional VoidCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback);
+    [RaisesException, LegacyInterfaceTypeChecking] void setLocalDescription(RTCSessionDescription description, [Default=Undefined] optional VoidCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback);
     // TODO(guidou): The failureCallback argument should be non-optional, and
     // there should be no mediaConstraints argument.
     [RaisesException] void createAnswer(RTCSessionDescriptionCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback, optional Dictionary mediaConstraints);
     // TODO(guidou): The successCallback and failureCallback arguments should be
     // non-optional.
-    [RaisesException] void setRemoteDescription(RTCSessionDescription description, [Default=Undefined] optional VoidCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback);
-    [RaisesException] void addIceCandidate(RTCIceCandidate candidate, VoidCallback successCallback, RTCErrorCallback failureCallback);
+    [RaisesException, LegacyInterfaceTypeChecking] void setRemoteDescription(RTCSessionDescription description, [Default=Undefined] optional VoidCallback successCallback, [Default=Undefined] optional RTCErrorCallback failureCallback);
+    [RaisesException, LegacyInterfaceTypeChecking] void addIceCandidate(RTCIceCandidate candidate, VoidCallback successCallback, RTCErrorCallback failureCallback);
     // TODO(guidou): The selector argument should the first (nullable,
     // non-optional) argument, and there should be a third failureCallback
     // argument.
-    void getStats(RTCStatsCallback successCallback, [Default=Undefined] optional MediaStreamTrack selector);
+    [LegacyInterfaceTypeChecking] void getStats(RTCStatsCallback successCallback, [Default=Undefined] optional MediaStreamTrack selector);
 
     // https://w3c.github.io/webrtc-pc/#peer-to-peer-data-api
     // TODO(guidou): The label argument should have [TreatNullAs=EmptyString]
@@ -125,9 +125,9 @@ enum RTCIceConnectionState {
     sequence<MediaStream> getLocalStreams();
     sequence<MediaStream> getRemoteStreams();
     MediaStream getStreamById(DOMString streamId);
-    [TypeChecking=Interface, RaisesException] void addStream(MediaStream? stream, optional Dictionary mediaConstraints);
-    [TypeChecking=Interface, RaisesException] void removeStream(MediaStream? stream);
-    [RaisesException] RTCDTMFSender createDTMFSender(MediaStreamTrack track);
+    [RaisesException] void addStream(MediaStream? stream, optional Dictionary mediaConstraints);
+    [RaisesException] void removeStream(MediaStream? stream);
+    [RaisesException, LegacyInterfaceTypeChecking] RTCDTMFSender createDTMFSender(MediaStreamTrack track);
     attribute EventHandler onaddstream;
     attribute EventHandler onremovestream;