Introduce code to resynthesize element models from summaries.

pkg/analyzer/test/src/summary/summary_test.dart

Index: pkg/analyzer/test/src/summary/summary_test.dart
diff --git a/pkg/analyzer/test/src/summary/summary_test.dart b/pkg/analyzer/test/src/summary/summary_test.dart
index 1ca1a7f3698ad025f0b0e55d1f2896538e85aa66..c20532b3593db54c1b585b58af2ad0fc151382cf 100644
--- a/pkg/analyzer/test/src/summary/summary_test.dart
+++ b/pkg/analyzer/test/src/summary/summary_test.dart
@@ -1437,21 +1437,31 @@ typedef F();
 
   test_field() {
     UnlinkedClass cls = serializeClassText('class C { int i; }');
-    expect(findVariable('i', variables: cls.fields), isNotNull);
+    UnlinkedVariable variable = findVariable('i', variables: cls.fields);
+    expect(variable, isNotNull);
+    expect(variable.isConst, isFalse);
+    expect(variable.isStatic, isFalse);
+    expect(variable.isFinal, isFalse);
     expect(findExecutable('i', executables: cls.executables), isNull);
     expect(findExecutable('i=', executables: cls.executables), isNull);
   }
 
+  test_field_const() {
+    UnlinkedVariable variable =
+        serializeClassText('class C { static const int i = 0; }').fields[0];
+    expect(variable.isConst, isTrue);
+  }
+
   test_field_final() {
     UnlinkedVariable variable =
         serializeClassText('class C { final int i = 0; }').fields[0];
     expect(variable.isFinal, isTrue);
   }
 
-  test_field_non_final() {
+  test_field_static() {
     UnlinkedVariable variable =
-        serializeClassText('class C { int i; }').fields[0];
-    expect(variable.isFinal, isFalse);
+        serializeClassText('class C { static int i; }').fields[0];
+    expect(variable.isStatic, isTrue);
   }
 
   test_generic_method_in_generic_class() {