Converted Observatory field-view element

runtime/observatory/lib/src/models/objects/field.dart

Index: runtime/observatory/lib/src/models/objects/field.dart
diff --git a/runtime/observatory/lib/src/models/objects/field.dart b/runtime/observatory/lib/src/models/objects/field.dart
index 152c920866c71a2d602c06a93382ae46d15ef464..188f223cde3259ff224f52baf6deb8bdc941f249 100644
--- a/runtime/observatory/lib/src/models/objects/field.dart
+++ b/runtime/observatory/lib/src/models/objects/field.dart
@@ -27,3 +27,21 @@ abstract class FieldRef extends ObjectRef {
   /// Is this field static?
   bool get isStatic;
 }
+
+enum GuardClassKind {
+  unknown,
+  single,
+  dynamic
+}
+
+abstract class Field extends Object implements FieldRef {
+  /// [optional] The value of this field, if the field is static.
+  InstanceRef get staticValue;
+
+  /// [optional] The location of this field in the source code.
+  SourceLocation get location;
+
+  GuardClassKind get guardClassKind;
+  ClassRef get guardClass;
+  bool get guardNullable;
+}