Find token at position and query Dart Mind if identifier or keyword.

dart/tests/try/poi/poi_test.dart

Index: dart/tests/try/poi/poi_test.dart
diff --git a/dart/tests/try/poi/poi_test.dart b/dart/tests/try/poi/poi_test.dart
index 166c4bee929ac1298d49d46428a7a88a77a9be3b..e02fe1c410d57c5dcdf30bac91b47c4497179305 100644
--- a/dart/tests/try/poi/poi_test.dart
+++ b/dart/tests/try/poi/poi_test.dart
@@ -27,7 +27,7 @@ class PoiTest {
 }
 
 void main() {
-  int position = 710;
+  int position = 695;
   List tests = [
       // The file empty_main.dart is a regression test for crash in
       // resolveMetadataAnnotation in dart2js.
@@ -35,5 +35,7 @@ void main() {
       new PoiTest(Platform.script, position),
   ];
 
+  poi.enableDartMind = false;
+
   asyncTest(() => Future.forEach(tests, (PoiTest test) => test.run()));
 }