Introduce code to resynthesize element models from summaries.

pkg/analyzer/lib/src/dart/element/type.dart

Index: pkg/analyzer/lib/src/dart/element/type.dart
diff --git a/pkg/analyzer/lib/src/dart/element/type.dart b/pkg/analyzer/lib/src/dart/element/type.dart
index 6acbd8919b87c3709c43b718903f68cf74c3c4be..4268f1ce5ccdbba8bd20f95e3644d7f8f168d5e1 100644
--- a/pkg/analyzer/lib/src/dart/element/type.dart
+++ b/pkg/analyzer/lib/src/dart/element/type.dart
@@ -195,6 +195,14 @@ class FunctionTypeImpl extends TypeImpl implements FunctionType {
 
   /**
    * Initialize a newly created function type to be declared by the given
+   * [element], with the given [name].
+   */
+  FunctionTypeImpl.elementWithName(Element element, String name)
+      : prunedTypedefs = null,
+        super(element, name);
+
+  /**
+   * Initialize a newly created function type to be declared by the given
    * [element].
    */
   FunctionTypeImpl.forTypedef(FunctionTypeAliasElement element,
@@ -1098,6 +1106,14 @@ class InterfaceTypeImpl extends TypeImpl implements InterfaceType {
       : super(element, element.displayName);
 
   /**
+   * Initialize a newly created type to be declared by the given [element],
+   * with the given [name].
+   */
+  InterfaceTypeImpl.elementWithName(ClassElement element, String name)
+      : prunedTypedefs = null,
+        super(element, name);
+
+  /**
    * Initialize a newly created type to have the given [name]. This constructor
    * should only be used in cases where there is no declaration of the type.
    */