Allow non-primitive-value dictionaries to be passed to constructors for html

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index d103ed0b261cec7b87fac2ed96767c1370ca0b17..9e8329bce6ae4d197656414a9eaee9c3f0e789fd 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -16749,6 +16749,8 @@ class LinkElement extends _Element_Merged {
 
 @DocsEditable
 @DomName('LocalMediaStream')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class LocalMediaStream extends MediaStream implements EventTarget {
   LocalMediaStream.internal() : super.internal();
 
@@ -17832,6 +17834,8 @@ class MediaSource extends EventTarget {
 
 
 @DomName('MediaStream')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class MediaStream extends EventTarget {
   MediaStream.internal() : super.internal();
 
@@ -17952,6 +17956,8 @@ class MediaStreamEvents extends Events {
 
 @DocsEditable
 @DomName('MediaStreamEvent')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class MediaStreamEvent extends Event {
   MediaStreamEvent.internal() : super.internal();
 
@@ -17972,6 +17978,8 @@ class MediaStreamEvent extends Event {
 
 @DocsEditable
 @DomName('MediaStreamTrack')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class MediaStreamTrack extends EventTarget {
   MediaStreamTrack.internal() : super.internal();
 
@@ -18067,6 +18075,8 @@ class MediaStreamTrackEvents extends Events {
 
 @DocsEditable
 @DomName('MediaStreamTrackEvent')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class MediaStreamTrackEvent extends Event {
   MediaStreamTrackEvent.internal() : super.internal();
 
@@ -21399,6 +21409,8 @@ class RtcDataChannelEvent extends Event {
 
 @DocsEditable
 @DomName('RTCIceCandidate')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class RtcIceCandidate extends NativeFieldWrapperClass1 {
   RtcIceCandidate.internal();
 
@@ -21450,6 +21462,8 @@ class RtcIceCandidateEvent extends Event {
 
 @DocsEditable
 @DomName('RTCPeerConnection')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class RtcPeerConnection extends EventTarget {
   RtcPeerConnection.internal() : super.internal();
 
@@ -21647,6 +21661,8 @@ class RtcPeerConnectionEvents extends Events {
 
 @DocsEditable
 @DomName('RTCSessionDescription')
+@SupportedBrowser(SupportedBrowser.CHROME)
+@Experimental
 class RtcSessionDescription extends NativeFieldWrapperClass1 {
   RtcSessionDescription.internal();