Add timing info for file IO into Dart based analyzer.

editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java

Index: editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
diff --git a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
index daba9037e73eb3bb61b96c285a8a60464379449e..8a0d4195a5068c3a682339ea3089cf38d35db59b 100644
--- a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
+++ b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
@@ -1252,11 +1252,8 @@ public class MainEngine {
     unit.getDirectives().add(importDirective("source.dart", null));
     unit.getDirectives().add(importDirective("java_core.dart", null));
     unit.getDirectives().add(importDirective("java_io.dart", null));
-    unit.getDirectives().add(
-        importDirective(
-            "engine.dart",
-            null,
-            importShowCombinator("AnalysisContext", "AnalysisEngine", "TimestampedData")));
+    unit.getDirectives().add(importDirective("engine.dart", null));
+    unit.getDirectives().add(importDirective("utilities_general.dart", null));
     unit.getDirectives().add(exportDirective("source.dart"));
     for (Entry<File, List<CompilationUnitMember>> entry : context.getFileToMembers().entrySet()) {
       File file = entry.getKey();