Validate cache consistency asynchronously. Compute modification times of physical files in a separa…

pkg/analysis_server/test/analysis_server_test.dart

Index: pkg/analysis_server/test/analysis_server_test.dart
diff --git a/pkg/analysis_server/test/analysis_server_test.dart b/pkg/analysis_server/test/analysis_server_test.dart
index eaea9a6521ea7dad550eda3d55c56b5ac1acbce7..7699859e7ad12e7f75d9b0b4ff7474d3d6b81f9c 100644
--- a/pkg/analysis_server/test/analysis_server_test.dart
+++ b/pkg/analysis_server/test/analysis_server_test.dart
@@ -447,7 +447,6 @@ import "../foo/foo.dart";
     AnalysisResult firstResult = new AnalysisResult([notice], 0, '', 0);
     AnalysisResult lastResult = new AnalysisResult(null, 1, '', 1);
     when(context.analysisOptions).thenReturn(new AnalysisOptionsImpl());
-    when(context.validateCacheConsistency()).thenReturn(false);
     when(context.performAnalysisTask)
         .thenReturnList([firstResult, firstResult, firstResult, lastResult]);
     server.serverServices.add(ServerService.STATUS);