diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index c3b52ba162c..d53c037a2d8 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -3851,10 +3851,10 @@ bool Class::TypeTestNonRecursive(const Class& cls,
   Isolate* isolate = thread->isolate();
   Class& this_class = Class::Handle(zone, cls.raw());
   while (true) {
-    // Check for DynamicType.
     // Each occurrence of DynamicType in type T is interpreted as the dynamic
-    // type, a supertype of all types.
-    if (other.IsDynamicClass()) {
+    // type, a supertype of all types. So are Object and void types.
+    if (other.IsDynamicClass() || other.IsObjectClass() ||
+        other.IsVoidClass()) {
       return true;
     }
     // Check for NullType, which, as of Dart 1.5, is a subtype of (and is more
@@ -3880,11 +3880,6 @@ bool Class::TypeTestNonRecursive(const Class& cls,
     if (this_class.IsDynamicClass()) {
       return !isolate->strong() && (test_kind == Class::kIsSubtypeOf);
     }
-    // Check for ObjectType. Any type that is not NullType or DynamicType
-    // (already checked above), is more specific than ObjectType/VoidType.
-    if (other.IsObjectClass() || other.IsVoidClass()) {
-      return true;
-    }
     // If other is neither Object, dynamic or void, then ObjectType/VoidType
     // can't be a subtype of other.
     if (this_class.IsObjectClass() || this_class.IsVoidClass()) {
@@ -3902,7 +3897,7 @@ bool Class::TypeTestNonRecursive(const Class& cls,
       // below), we only check a subvector of the proper length.
       // Check for covariance.
       if (other_type_arguments.IsNull() ||
-          other_type_arguments.IsRaw(from_index, num_type_params)) {
+          other_type_arguments.IsTopTypes(from_index, num_type_params)) {
         return true;
       }
       if (type_arguments.IsNull() ||
@@ -4025,8 +4020,7 @@ bool Class::FutureOrTypeTest(Zone* zone,
     }
     const AbstractType& other_type_arg =
         AbstractType::Handle(zone, other_type_arguments.TypeAt(0));
-    if (other_type_arg.IsObjectType() || other_type_arg.IsDynamicType() ||
-        other_type_arg.IsVoidType()) {
+    if (other_type_arg.IsTopType()) {
       return true;
     }
     if (!type_arguments.IsNull() && IsFutureClass()) {
@@ -4798,6 +4792,18 @@ bool TypeArguments::IsDynamicTypes(bool raw_instantiated,
   return true;
 }
 
+bool TypeArguments::IsTopTypes(intptr_t from_index, intptr_t len) const {
+  ASSERT(Length() >= (from_index + len));
+  AbstractType& type = AbstractType::Handle();
+  for (intptr_t i = 0; i < len; i++) {
+    type = TypeAt(from_index + i);
+    if (type.IsNull() || !type.IsTopType()) {
+      return false;
+    }
+  }
+  return true;
+}
+
 bool TypeArguments::TypeTest(TypeTestKind test_kind,
                              const TypeArguments& other,
                              intptr_t from_index,
@@ -6609,7 +6615,7 @@ bool Function::TestParameterType(TypeTestKind test_kind,
   if (Isolate::Current()->strong()) {
     const AbstractType& param_type =
         AbstractType::Handle(ParameterTypeAt(parameter_position));
-    if (param_type.IsDynamicType()) {
+    if (param_type.IsTopType()) {
       return true;
     }
     const AbstractType& other_param_type =
@@ -15759,7 +15765,7 @@ bool Instance::IsInstanceOf(
   Isolate* isolate = thread->isolate();
   const Class& cls = Class::Handle(zone, clazz());
   if (cls.IsClosureClass()) {
-    if (other.IsObjectType() || other.IsDartFunctionType() ||
+    if (other.IsTopType() || other.IsDartFunctionType() ||
         other.IsDartClosureType()) {
       return true;
     }
@@ -15776,9 +15782,7 @@ bool Instance::IsInstanceOf(
       if (instantiated_other.IsTypeRef()) {
         instantiated_other = TypeRef::Cast(instantiated_other).type();
       }
-      if (instantiated_other.IsDynamicType() ||
-          instantiated_other.IsObjectType() ||
-          instantiated_other.IsVoidType() ||
+      if (instantiated_other.IsTopType() ||
           instantiated_other.IsDartFunctionType()) {
         return true;
       }
@@ -15834,8 +15838,7 @@ bool Instance::IsInstanceOf(
     if (instantiated_other.IsTypeRef()) {
       instantiated_other = TypeRef::Cast(instantiated_other).type();
     }
-    if (instantiated_other.IsDynamicType() ||
-        instantiated_other.IsObjectType() || instantiated_other.IsVoidType()) {
+    if (instantiated_other.IsTopType()) {
       return true;
     }
   }
@@ -15899,8 +15902,7 @@ bool Instance::IsFutureOrInstanceOf(Zone* zone,
         TypeArguments::Handle(zone, other.arguments());
     const AbstractType& other_type_arg =
         AbstractType::Handle(zone, other_type_arguments.TypeAt(0));
-    if (other_type_arg.IsObjectType() || other_type_arg.IsDynamicType() ||
-        other_type_arg.IsVoidType()) {
+    if (other_type_arg.IsTopType()) {
       return true;
     }
     if (Class::Handle(zone, clazz()).IsFutureClass()) {
@@ -16474,70 +16476,88 @@ bool AbstractType::IsDynamicType() const {
 }
 
 bool AbstractType::IsVoidType() const {
+  // The void type is always canonical, because void is a keyword.
   return raw() == Object::void_type().raw();
 }
 
+bool AbstractType::IsObjectType() const {
+  return HasResolvedTypeClass() && (type_class_id() == kInstanceCid);
+}
+
+bool AbstractType::IsTopType() const {
+  if (IsVoidType()) {
+    return true;
+  }
+  if (!HasResolvedTypeClass()) {
+    return false;
+  }
+  classid_t cid = type_class_id();
+  return (cid == kDynamicCid) || (cid == kInstanceCid);
+}
+
 bool AbstractType::IsNullType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Isolate::Current()->object_store()->null_class());
 }
 
 bool AbstractType::IsBoolType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Isolate::Current()->object_store()->bool_class());
 }
 
 bool AbstractType::IsIntType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::IntType()).type_class());
 }
 
 bool AbstractType::IsInt64Type() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Int64Type()).type_class());
 }
 
 bool AbstractType::IsDoubleType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Double()).type_class());
 }
 
 bool AbstractType::IsFloat32x4Type() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Float32x4()).type_class());
 }
 
 bool AbstractType::IsFloat64x2Type() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Float64x2()).type_class());
 }
 
 bool AbstractType::IsInt32x4Type() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Int32x4()).type_class());
 }
 
 bool AbstractType::IsNumberType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::Number()).type_class());
 }
 
 bool AbstractType::IsSmiType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::SmiType()).type_class());
 }
 
 bool AbstractType::IsStringType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::StringType()).type_class());
 }
 
 bool AbstractType::IsDartFunctionType() const {
-  return !IsFunctionType() && HasResolvedTypeClass() &&
+  return HasResolvedTypeClass() &&
          (type_class() == Type::Handle(Type::DartFunctionType()).type_class());
 }
 
 bool AbstractType::IsDartClosureType() const {
+  // Non-typedef function types have '_Closure' class as type class, but are not
+  // the Dart '_Closure' type.
   return !IsFunctionType() && HasResolvedTypeClass() &&
          (type_class() == Isolate::Current()->object_store()->closure_class());
 }
@@ -16580,8 +16600,7 @@ bool AbstractType::TypeTest(TypeTestKind test_kind,
   // comparing function-types).
   // As of Dart 1.5, the Null type is a subtype of (and is more specific than)
   // any type.
-  if (other.IsObjectType() || other.IsDynamicType() || other.IsVoidType() ||
-      IsNullType()) {
+  if (other.IsTopType() || IsNullType()) {
     return true;
   }
   Thread* thread = Thread::Current();
@@ -16746,8 +16765,7 @@ bool AbstractType::FutureOrTypeTest(Zone* zone,
         TypeArguments::Handle(zone, other.arguments());
     const AbstractType& other_type_arg =
         AbstractType::Handle(zone, other_type_arguments.TypeAt(0));
-    if (other_type_arg.IsObjectType() || other_type_arg.IsDynamicType() ||
-        other_type_arg.IsVoidType()) {
+    if (other_type_arg.IsTopType()) {
       return true;
     }
     // Retry the TypeTest function after unwrapping type arg of FutureOr.
@@ -17127,7 +17145,7 @@ bool Type::IsEquivalent(const Instance& other, TrailPtr trail) const {
   if (IsMalbounded() != other_type.IsMalbounded()) {
     return false;  // Do not drop bound error.
   }
-  if (type_class() != other_type.type_class()) {
+  if (type_class_id() != other_type.type_class_id()) {
     return false;
   }
   if (!IsFinalized() || !other_type.IsFinalized()) {
@@ -17435,13 +17453,11 @@ RawAbstractType* Type::Canonicalize(TrailPtr trail) const {
 
   // Since void is a keyword, we never have to canonicalize the void type after
   // it is canonicalized once by the vm isolate. The parser does the mapping.
-  ASSERT((type_class() != Object::void_class()) ||
-         (isolate == Dart::vm_isolate()));
+  ASSERT((type_class_id() != kVoidCid) || (isolate == Dart::vm_isolate()));
 
   // Since dynamic is not a keyword, the parser builds a type that requires
   // canonicalization.
-  if ((type_class() == Object::dynamic_class()) &&
-      (isolate != Dart::vm_isolate())) {
+  if ((type_class_id() == kDynamicCid) && (isolate != Dart::vm_isolate())) {
     ASSERT(Object::dynamic_type().IsCanonical());
     return Object::dynamic_type().raw();
   }
@@ -17549,7 +17565,7 @@ bool Type::CheckIsCanonical(Thread* thread) const {
   if (IsMalformed() || IsRecursive()) {
     return true;
   }
-  if (type_class() == Object::dynamic_class()) {
+  if (type_class_id() == kDynamicCid) {
     return (raw() == Object::dynamic_type().raw());
   }
   Zone* zone = thread->zone();
@@ -17615,7 +17631,7 @@ intptr_t Type::ComputeHash() const {
   ASSERT(IsFinalized());
   uint32_t result = 1;
   if (IsMalformed()) return result;
-  result = CombineHashes(result, Class::Handle(type_class()).id());
+  result = CombineHashes(result, type_class_id());
   result = CombineHashes(result, TypeArguments::Handle(arguments()).Hash());
   if (IsFunctionType()) {
     const Function& sig_fun = Function::Handle(signature());
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 9da8f8c9de8..5b9fdea8bb4 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -5665,6 +5665,11 @@ class TypeArguments : public Instance {
     return IsDynamicTypes(true, 0, len);
   }
 
+  // Check if the subvector of length 'len' starting at 'from_index' of this
+  // type argument vector consists solely of DynamicType, ObjectType, or
+  // VoidType.
+  bool IsTopTypes(intptr_t from_index, intptr_t len) const;
+
   // Check the subtype relationship, considering only a subvector of length
   // 'len' starting at 'from_index'.
   bool IsSubtypeOf(const TypeArguments& other,
@@ -5985,10 +5990,12 @@ class AbstractType : public Instance {
   // Check if this type represents the 'Null' type.
   bool IsNullType() const;
 
-  bool IsObjectType() const {
-    return !IsFunctionType() && HasResolvedTypeClass() &&
-           Class::Handle(type_class()).IsObjectClass();
-  }
+  // Check if this type represents the 'Object' type.
+  bool IsObjectType() const;
+
+  // Check if this type represents a top type, i.e. 'dynamic', 'Object', or
+  // 'void' type.
+  bool IsTopType() const;
 
   // Check if this type represents the 'bool' type.
   bool IsBoolType() const;
@@ -6265,6 +6272,9 @@ class TypeRef : public AbstractType {
   }
   RawAbstractType* type() const { return raw_ptr()->type_; }
   void set_type(const AbstractType& value) const;
+  virtual classid_t type_class_id() const {
+    return AbstractType::Handle(type()).type_class_id();
+  }
   virtual RawClass* type_class() const {
     return AbstractType::Handle(type()).type_class();
   }
@@ -6440,6 +6450,9 @@ class BoundedType : public AbstractType {
   virtual bool HasResolvedTypeClass() const {
     return AbstractType::Handle(type()).HasResolvedTypeClass();
   }
+  virtual classid_t type_class_id() const {
+    return AbstractType::Handle(type()).type_class_id();
+  }
   virtual RawClass* type_class() const {
     return AbstractType::Handle(type()).type_class();
   }
diff --git a/tests/corelib_2/corelib_2.status b/tests/corelib_2/corelib_2.status
index 30ccbe777b4..074fb061e73 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -420,15 +420,11 @@ bigint_test: Pass, Timeout # Please triage.
 [ $compiler == dartk && $runtime == vm && $strong ]
 apply3_test: CompileTimeError # Issue 31402 (Invocation arguments)
 bool_from_environment2_test/03: MissingCompileTimeError
-collection_removes_test: RuntimeError
 compare_to2_test: RuntimeError
-hash_set_test/01: RuntimeError
-hash_set_test/none: RuntimeError
 int_modulo_arith_test/modPow: CompileTimeError # Issue 31402 (Assert statement)
 int_modulo_arith_test/none: CompileTimeError # Issue 31402 (Assert statement)
 iterable_empty_test: RuntimeError
 iterable_fold_test/02: RuntimeError
-iterable_mapping_test/none: RuntimeError
 iterable_reduce_test/01: CompileTimeError # Issue 31533
 iterable_reduce_test/none: RuntimeError
 iterable_to_list_test/01: RuntimeError
@@ -438,9 +434,7 @@ list_replace_range_test: RuntimeError
 list_set_all_test: RuntimeError
 null_nosuchmethod_test/01: CompileTimeError # Issue 31402 (Invocation arguments)
 null_nosuchmethod_test/none: CompileTimeError # Issue 31402 (Invocation arguments)
-set_test: RuntimeError
 splay_tree_from_iterable_test: RuntimeError
-splay_tree_test/none: RuntimeError
 string_case_test/01: RuntimeError
 string_from_environment3_test/03: MissingCompileTimeError
 string_trimlr_test/02: RuntimeError
@@ -459,15 +453,11 @@ unicode_test: RuntimeError
 # ===== dartkp + dart_precompiled status lines =====
 [ $compiler == dartkp && $runtime == dart_precompiled && $strong ]
 bool_from_environment2_test/03: MissingCompileTimeError
-collection_removes_test: RuntimeError
 compare_to2_test: RuntimeError
-hash_set_test/01: RuntimeError
-hash_set_test/none: RuntimeError
 int_modulo_arith_test/modPow: CompileTimeError # Issue 31402 (Assert statement)
 int_modulo_arith_test/none: CompileTimeError # Issue 31402 (Assert statement)
 iterable_empty_test: RuntimeError
 iterable_fold_test/02: RuntimeError
-iterable_mapping_test/none: RuntimeError
 iterable_reduce_test/01: CompileTimeError # Issue 31533
 iterable_reduce_test/none: RuntimeError
 iterable_to_list_test/01: RuntimeError
@@ -478,9 +468,7 @@ list_set_all_test: RuntimeError
 null_nosuchmethod_test/01: CompileTimeError # Issue 31402 (Invocation arguments)
 null_nosuchmethod_test/none: CompileTimeError # Issue 31402 (Invocation arguments)
 regexp/stack-overflow_test: RuntimeError
-set_test: RuntimeError
 splay_tree_from_iterable_test: RuntimeError
-splay_tree_test/none: RuntimeError
 string_case_test/01: RuntimeError
 string_from_environment3_test/03: MissingCompileTimeError
 string_trimlr_test/02: RuntimeError
diff --git a/tests/language_2/language_2_kernel.status b/tests/language_2/language_2_kernel.status
index 88b177b6b81..d20b686473e 100644
--- a/tests/language_2/language_2_kernel.status
+++ b/tests/language_2/language_2_kernel.status
@@ -643,7 +643,6 @@ generic_function_type_as_type_argument_test/02: Pass # For the wrong reason, iss
 generic_function_type_as_type_argument_test/02: MissingCompileTimeError, OK # No type inference
 generic_function_typedef2_test/04: MissingCompileTimeError
 generic_instanceof2_test: RuntimeError
-generic_instanceof_test: RuntimeError
 generic_is_check_test: RuntimeError
 generic_list_checked_test: CompileTimeError # Issue 31402 (Variable declaration)
 generic_method_types_test/02: RuntimeError
@@ -682,7 +681,6 @@ import_self_test/01: MissingCompileTimeError
 initializing_formal_final_test: MissingCompileTimeError
 initializing_formal_type_annotation_test/01: MissingCompileTimeError
 initializing_formal_type_annotation_test/02: MissingCompileTimeError
-instanceof2_test: RuntimeError
 instantiate_tearoff_after_contravariance_check_test: CompileTimeError
 instantiate_tearoff_of_call_test: CompileTimeError
 instantiate_tearoff_test: CompileTimeError
@@ -798,7 +796,6 @@ malformed_test/22: MissingCompileTimeError
 malformed_test/23: MissingCompileTimeError
 malformed_test/24: MissingCompileTimeError
 malformed_type_test: MissingCompileTimeError
-many_generic_instanceof_test: RuntimeError
 map_literal3_test/01: MissingCompileTimeError
 map_literal3_test/02: MissingCompileTimeError
 map_literal3_test/03: MissingCompileTimeError
@@ -1875,7 +1872,6 @@ generic_function_typedef2_test/04: MissingCompileTimeError
 generic_function_typedef_test/01: Pass
 generic_function_typedef_test/01: RuntimeError
 generic_instanceof2_test: RuntimeError
-generic_instanceof_test: RuntimeError
 generic_is_check_test: RuntimeError
 generic_list_checked_test: RuntimeError
 generic_list_checked_test: CompileTimeError # Issue 31402 (Variable declaration)
@@ -1949,7 +1945,6 @@ initializing_formal_final_test: MissingCompileTimeError
 initializing_formal_type_annotation_test/01: MissingCompileTimeError
 initializing_formal_type_annotation_test/02: MissingCompileTimeError
 instance_creation_in_function_annotation_test: SkipByDesign
-instanceof2_test: RuntimeError
 instanceof4_test/01: RuntimeError
 instanceof4_test/01: Pass
 instanceof4_test/none: Pass
@@ -2073,7 +2068,6 @@ malformed_test/22: MissingCompileTimeError
 malformed_test/23: MissingCompileTimeError
 malformed_test/24: MissingCompileTimeError
 malformed_type_test: MissingCompileTimeError
-many_generic_instanceof_test: RuntimeError
 many_overridden_no_such_method_test: SkipByDesign
 map_literal3_test/01: MissingCompileTimeError
 map_literal3_test/02: MissingCompileTimeError
diff --git a/tests/language_2/vm/type_vm_test.dart b/tests/language_2/vm/type_vm_test.dart
index a5aa7785e12..cd3059f53b4 100644
--- a/tests/language_2/vm/type_vm_test.dart
+++ b/tests/language_2/vm/type_vm_test.dart
@@ -127,7 +127,7 @@ class TypeTest {
     {
       var a = new List(5);
       List a0 = a;
-      List<Object> ao = a;  //# 29: runtime error
+      List<Object> ao = a;  // No error.
       List<int> ai = a;  //# 30: runtime error
       List<num> an = a;  //# 31: runtime error
       List<String> as = a;  //# 32: runtime error
diff --git a/tests/lib_2/lib_2_kernel.status b/tests/lib_2/lib_2_kernel.status
index 315dbeb4cb2..e0d2623990c 100644
--- a/tests/lib_2/lib_2_kernel.status
+++ b/tests/lib_2/lib_2_kernel.status
@@ -124,7 +124,6 @@ mirrors/empty_test: Crash
 mirrors/empty_test: RuntimeError
 mirrors/enum_test: CompileTimeError # Issue 31402 (Invocation arguments)
 mirrors/equality_test: RuntimeError
-mirrors/fake_function_without_call_test: RuntimeError
 mirrors/function_type_mirror_test: RuntimeError
 mirrors/generic_bounded_by_type_parameter_test/02: MissingCompileTimeError
 mirrors/generic_bounded_test/01: MissingCompileTimeError
@@ -284,13 +283,7 @@ async/timer_cancel_test: RuntimeError
 async/timer_isActive_test: RuntimeError
 async/timer_repeat_test: RuntimeError
 async/zone_run_unary_test: RuntimeError
-convert/chunked_conversion_json_decode1_test: RuntimeError
-convert/json_chunk_test: RuntimeError
-convert/json_test: RuntimeError
 convert/json_toEncodable_reviver_test: CompileTimeError
-convert/json_utf8_chunk_test: RuntimeError
-convert/streamed_conversion_json_encode1_test: RuntimeError
-convert/streamed_conversion_json_utf8_encode_test: RuntimeError
 isolate/count_test: Timeout
 isolate/cross_isolate_message_test: RuntimeError
 isolate/illegal_msg_function_test: RuntimeError
@@ -331,7 +324,6 @@ mirrors/class_mirror_type_variables_test: RuntimeError
 mirrors/closures_test: RuntimeError
 mirrors/constructors_test: RuntimeError
 mirrors/fake_function_with_call_test: RuntimeError
-mirrors/function_apply_test: RuntimeError
 mirrors/generic_bounded_by_type_parameter_test/none: RuntimeError
 mirrors/generic_bounded_test/none: RuntimeError
 mirrors/generic_class_declaration_test: RuntimeError
@@ -354,7 +346,6 @@ mirrors/instantiate_abstract_class_test: RuntimeError
 mirrors/intercepted_class_test: RuntimeError
 mirrors/invocation_fuzz_test/smi: Pass
 mirrors/invoke_closurization2_test: RuntimeError
-mirrors/invoke_named_test/none: RuntimeError
 mirrors/library_declarations_test/01: RuntimeError
 mirrors/library_imports_bad_metadata_test/none: RuntimeError
 mirrors/metadata_const_map_test: Crash
@@ -372,7 +363,6 @@ mirrors/reflected_type_test/01: MissingCompileTimeError
 mirrors/reflected_type_test/02: MissingCompileTimeError
 mirrors/reflected_type_test/03: MissingCompileTimeError
 mirrors/regress_16321_test/none: Crash
-mirrors/regress_19731_test: RuntimeError
 mirrors/return_type_test: RuntimeError
 mirrors/top_level_accessors_test/01: MissingCompileTimeError
 mirrors/type_argument_is_type_variable_test: RuntimeError
@@ -442,13 +432,7 @@ async/timer_not_available_test: RuntimeError
 async/timer_repeat_test: CompileTimeError # Issue 31402 (Invocation arguments)
 async/timer_test: CompileTimeError # Issue 31402 (Invocation arguments)
 async/zone_run_unary_test: CompileTimeError # Issue 31537
-convert/chunked_conversion_json_decode1_test: RuntimeError
-convert/json_chunk_test: RuntimeError
-convert/json_test: RuntimeError
 convert/json_toEncodable_reviver_test: CompileTimeError
-convert/json_utf8_chunk_test: RuntimeError
-convert/streamed_conversion_json_encode1_test: RuntimeError
-convert/streamed_conversion_json_utf8_encode_test: RuntimeError
 html/*: SkipByDesign # dart:html not supported on VM.
 isolate/compile_time_error_test/01: Crash
 isolate/compile_time_error_test/01: MissingCompileTimeError
diff --git a/tests/standalone_2/standalone_2.status b/tests/standalone_2/standalone_2.status
index c92612e6010..678a68810f9 100644
--- a/tests/standalone_2/standalone_2.status
+++ b/tests/standalone_2/standalone_2.status
@@ -104,7 +104,6 @@ io/http_proxy_advanced_test: CompileTimeError
 io/http_redirect_test: RuntimeError
 io/http_reuse_server_port_test: RuntimeError
 io/http_server_response_test: RuntimeError
-io/http_session_test: RuntimeError
 io/regress_10026_test: RuntimeError
 io/skipping_dart2js_compilations_test: CompileTimeError
 io/socket_upgrade_to_secure_test: RuntimeError