Add a test of summaries that uses strong mode.

pkg/analyzer/lib/src/summary/summarize_elements.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library serialization.elements;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ skipping 427 matching lines @@
   }
 
   /**
    * Serialize the given [executableElement], creating an [UnlinkedExecutable].
    */
   UnlinkedExecutableBuilder serializeExecutable(
       ExecutableElement executableElement) {
     UnlinkedExecutableBuilder b = new UnlinkedExecutableBuilder();
     b.name = executableElement.name;
     b.nameOffset = executableElement.nameOffset;
-    if (executableElement is! ConstructorElement &&
-        !executableElement.type.returnType.isVoid) {
-      b.returnType = serializeTypeRef(
-          executableElement.type.returnType, executableElement);
+    if (executableElement is! ConstructorElement) {
+      if (executableElement.hasImplicitReturnType) {
+        // In strong mode, the variable's static type may have been overwritten
+        // by an inferred type.  In this part of the summary we want to store
+        // the weak mode static type (which is `dynamic`), since the strong
+        // mode static type is fully linked information.
+        b.returnType = serializeTypeRef(
+            librarySerializer.typeProvider.dynamicType, executableElement);
+      } else if (!executableElement.type.returnType.isVoid) {
+        b.returnType = serializeTypeRef(
+            executableElement.type.returnType, executableElement);
+      }
     }
     b.typeParameters =
         executableElement.typeParameters.map(serializeTypeParam).toList();
     b.parameters =
         executableElement.type.parameters.map(serializeParam).toList();
     if (executableElement is PropertyAccessorElement) {
       if (executableElement.isGetter) {
         b.kind = UnlinkedExecutableKind.getter;
       } else {
         b.kind = UnlinkedExecutableKind.setter;
@@ skipping 230 matching lines @@
     return unresolvedReferenceIndex;
   }
 
   /**
    * Serialize the given [variable], creating an [UnlinkedVariable].
    */
   UnlinkedVariableBuilder serializeVariable(PropertyInducingElement variable) {
     UnlinkedVariableBuilder b = new UnlinkedVariableBuilder();
     b.name = variable.name;
     b.nameOffset = variable.nameOffset;
-    b.type = serializeTypeRef(variable.type, variable);
+    if (variable.hasImplicitType) {
+      // In strong mode, the variable's static type may have been overwritten
+      // by an inferred type.  In this part of the summary we want to store the
+      // weak mode static type (which is `dynamic`), since the strong mode
+      // static type is fully linked information.
+      b.type = serializeTypeRef(
+          librarySerializer.typeProvider.dynamicType, variable);
+    } else {
+      b.type = serializeTypeRef(variable.type, variable);
+    }
     b.isStatic = variable.isStatic && variable.enclosingElement is ClassElement;
     b.isFinal = variable.isFinal;
     b.isConst = variable.isConst;
     b.hasImplicitType = variable.hasImplicitType;
     b.documentationComment = serializeDocumentation(variable);
     if (variable.isConst && variable is ConstVariableElement) {
       ConstVariableElement constVariable = variable as ConstVariableElement;
       Expression initializer = constVariable.constantInitializer;
       if (initializer != null) {
         b.constExpr = serializeConstExpr(initializer);
@@ skipping 267 matching lines @@
       exportNames.add(new LinkedExportNameBuilder(
           name: name,
           dependency: serializeDependency(dependentLibrary),
           unit: unit,
           kind: kind));
     }
     pb.exportNames = exportNames;
     return pb;
   }
 }