Use the entity model for dump_info.

pkg/compiler/lib/src/common_elements.dart

Index: pkg/compiler/lib/src/common_elements.dart
diff --git a/pkg/compiler/lib/src/common_elements.dart b/pkg/compiler/lib/src/common_elements.dart
index 86d62ea491d0f213d9421b18c281973a01eac4f2..aa98d034e98a3bd413c54c9f4807010fb7e90df3 100644
--- a/pkg/compiler/lib/src/common_elements.dart
+++ b/pkg/compiler/lib/src/common_elements.dart
@@ -14,6 +14,7 @@ import 'elements/types.dart';
 import 'js_backend/backend.dart' show JavaScriptBackend;
 import 'js_backend/constant_system_javascript.dart';
 import 'js_backend/native_data.dart' show NativeBasicData;
+import 'constants/expressions.dart' show ConstantExpression;
 import 'universe/call_structure.dart' show CallStructure;
 import 'universe/selector.dart' show Selector;
 import 'universe/call_structure.dart';
@@ -1252,13 +1253,22 @@ abstract class ElementEnvironment {
       ClassEntity cls, void f(ClassEntity declarer, MemberEntity member));
 
   /// Calls [f] for every constructor declared in [cls].
+  ///
+  /// Will ensure that the class and all constructors are resolved if
+  /// [ensureResolved] is `true`.
+  // TODO(redemption): Remove the 'ensureResolved' parameter
   void forEachConstructor(
-      ClassEntity cls, void f(ConstructorEntity constructor));
+      ClassEntity cls, void f(ConstructorEntity constructor),
+      {bool ensureResolved: true});
 
   /// Calls [f] for every constructor body in [cls].
   void forEachConstructorBody(
       ClassEntity cls, void f(ConstructorBodyEntity constructorBody));
 
+  /// Calls [f] for each nested closure in [member].
+  void forEachNestedClosure(
+      MemberEntity member, void f(FunctionEntity closure));
+
   /// Returns the superclass of [cls].
   ///
   /// If [skipUnnamedMixinApplications] is `true`, unnamed mixin applications
@@ -1338,6 +1348,9 @@ abstract class ElementEnvironment {
   /// Returns the type of the [local] function.
   FunctionType getLocalFunctionType(Local local);
 
+  /// Gets the constant value of [field], or `null` if [field] is non-const.
+  ConstantExpression getFieldConstant(FieldEntity field);
+
   /// Returns the 'unaliased' type of [type]. For typedefs this is the function
   /// type it is an alias of, for other types it is the type itself.
   ///