Uncomment and test fixes for importing libraries.

pkg/analysis_services/lib/src/correction/source_range.dart

Index: pkg/analysis_services/lib/src/correction/source_range.dart
diff --git a/pkg/analysis_services/lib/src/correction/source_range.dart b/pkg/analysis_services/lib/src/correction/source_range.dart
index 433d5e6fad22966de77471a15d1ef2861899be9d..a0c3a46c5eedc42aab3b2f6159d12d8b973c9b23 100644
--- a/pkg/analysis_services/lib/src/correction/source_range.dart
+++ b/pkg/analysis_services/lib/src/correction/source_range.dart
@@ -47,6 +47,12 @@ SourceRange rangeNodes(List<AstNode> nodes) {
   return rangeStartEnd(first, last);
 }
 
+SourceRange rangeOffsetEnd(o) {
+  int offset = o.offset;
+  int length = o.end - offset;
+  return new SourceRange(offset, length);
+}
+
 SourceRange rangeStartEnd(a, b) {
   int offset = a is int ? a : a.offset;
   int end = b is int ? b : b.end;