Send re-analyze requests to plugins

pkg/analysis_server/test/analysis/reanalyze_test.dart

Index: pkg/analysis_server/test/analysis/reanalyze_test.dart
diff --git a/pkg/analysis_server/test/analysis/reanalyze_test.dart b/pkg/analysis_server/test/analysis/reanalyze_test.dart
index a6cbb89cff08eda065122582cd66ef9aff01dc66..d644abc063fe3f6e1456c3059a6c79af5d60eb29 100644
--- a/pkg/analysis_server/test/analysis/reanalyze_test.dart
+++ b/pkg/analysis_server/test/analysis/reanalyze_test.dart
@@ -72,4 +72,13 @@ class ReanalyzeTest extends AbstractAnalysisTest {
       expect(errors, hasLength(1));
     }
   }
+
+  test_sentToPlugins() async {
+    createProject();
+    await waitForTasksFinished();
+    Request request = new Request("0", ANALYSIS_REANALYZE);
+    handleSuccessfulRequest(request);
+    // verify
+    expect(pluginManager.broadcastedRequest, isNotNull);
+  }
 }