Improve class-tree, class-view, and instance-view.

runtime/vm/object_service.cc

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/debugger.h"
 #include "vm/disassembler.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 83 matching lines @@
   const Error& err = Error::Handle(EnsureIsFinalized(Thread::Current()));
   if (!err.IsNull()) {
     jsobj.AddProperty("error", err);
   }
   jsobj.AddProperty("abstract", is_abstract());
   jsobj.AddProperty("const", is_const());
   jsobj.AddProperty("_finalized", is_finalized());
   jsobj.AddProperty("_implemented", is_implemented());
   jsobj.AddProperty("_patch", is_patch());
   jsobj.AddProperty("_traceAllocations", TraceAllocation(isolate));
+
   const Class& superClass = Class::Handle(SuperClass());
   if (!superClass.IsNull()) {
     jsobj.AddProperty("super", superClass);
   }
+  const AbstractType& superType = AbstractType::Handle(super_type());
+  if (!superType.IsNull()) {
+    jsobj.AddProperty("superType", superType);
+  }
+  const Type& mix = Type::Handle(mixin());
+  if (!mix.IsNull()) {
+    jsobj.AddProperty("mixin", mix);
+  }
   jsobj.AddProperty("library", Object::Handle(library()));
   const Script& script = Script::Handle(this->script());
   if (!script.IsNull()) {
     jsobj.AddLocation(script, token_pos(), ComputeEndTokenPos());
   }
   {
     JSONArray interfaces_array(&jsobj, "interfaces");
     const Array& interface_array = Array::Handle(interfaces());
     Type& interface_type = Type::Handle();
     if (!interface_array.IsNull()) {
@@ skipping 1475 matching lines @@
   jsobj.AddProperty("mirrorReferent", referent_handle);
 }
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 #endif
 
 }  // namespace dart