Add a test of summaries that uses strong mode.

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

Index: pkg/analyzer/test/src/summary/summarize_elements_test.dart
diff --git a/pkg/analyzer/test/src/summary/summarize_elements_test.dart b/pkg/analyzer/test/src/summary/summarize_elements_test.dart
index 7101f50ceed4c5f506b3f7e075f95d8e87135ffc..fa7efa751ff200ab70ea382cc45484a7e7c3bae0 100644
--- a/pkg/analyzer/test/src/summary/summarize_elements_test.dart
+++ b/pkg/analyzer/test/src/summary/summarize_elements_test.dart
@@ -53,6 +53,12 @@ class SummarizeElementsTest extends ResolverTestCase with SummaryTest {
   @override
   bool get expectAbsoluteUrisInDependencies => true;
 
+  /**
+   * Determine the analysis options that should be used for this test.
+   */
+  AnalysisOptionsImpl get options =>
+      new AnalysisOptionsImpl()..enableGenericMethods = true;
+
   @override
   bool get skipFullyLinkedData => false;
 
@@ -111,8 +117,6 @@ class SummarizeElementsTest extends ResolverTestCase with SummaryTest {
   @override
   void setUp() {
     super.setUp();
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.enableGenericMethods = true;
     resetWithOptions(options);
   }