Hide IOException from java_core.dart in analyzer_experimental.

pkg/analyzer_experimental/lib/src/generated/source_io.dart

Index: pkg/analyzer_experimental/lib/src/generated/source_io.dart
diff --git a/pkg/analyzer_experimental/lib/src/generated/source_io.dart b/pkg/analyzer_experimental/lib/src/generated/source_io.dart
index 98d8fc0a3a016edd226de0a098a842ed9d0e36be..43b11ea4f462a8cf4d3f9bab60484fbcf61af72d 100644
--- a/pkg/analyzer_experimental/lib/src/generated/source_io.dart
+++ b/pkg/analyzer_experimental/lib/src/generated/source_io.dart
@@ -3,7 +3,7 @@
 library engine.source.io;
 import 'source.dart';
 import 'dart:io';
-import 'java_core.dart';
+import 'java_core.dart' hide IOException;
 import 'java_io.dart';
 import 'sdk.dart' show DartSdk;
 import 'engine.dart' show AnalysisContext, AnalysisEngine;
@@ -324,4 +324,4 @@ class FileUriResolver extends UriResolver {
     }
     return new FileBasedSource.con1(contentCache, new JavaFile.fromUri(uri));
   }
-}
+}