Merge pull request #6485 from stephentoub/iobjref_model

Add IObjectReference to model.xml

Author: stephentoub

src/mscorlib/model.xml

@@ -9599,6 +9599,9 @@
       <Member MemberType="Property" Name="Value" />
       <Member MemberType="Property" Name="ObjectType" />
     </Type>
+    <Type Name="System.Runtime.Serialization.IObjectReference">
+      <Member Name="GetRealObject(System.Runtime.Serialization.StreamingContext)" />
+    </Type>
     <Type Name="System.Runtime.Serialization.ISerializable">
       <Member Name="GetObjectData(System.Runtime.Serialization.SerializationInfo,System.Runtime.Serialization.StreamingContext)" />
     </Type>

src/mscorlib/ref/mscorlib.cs

@@ -11372,6 +11372,8 @@ public sealed class SerializationInfo
         public SerializationInfo(Type type, IFormatterConverter converter) { }
         public string AssemblyName { get { throw null; } set { } }
         public string FullTypeName { get { throw null; } set { } }
+        public bool IsFullTypeNameSetExplicit { get { throw null; } }
+        public bool IsAssemblyNameSetExplicit { get { throw null; } }
         public int MemberCount { get { throw null; } }
         public Type ObjectType { get { throw null; } }
         public void AddValue(string name, bool value) { }