Update LineInfo during incremental resolution.

pkg/analyzer/lib/src/generated/incremental_resolver.dart

Index: pkg/analyzer/lib/src/generated/incremental_resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/incremental_resolver.dart b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
index ff3ad1296542d0e9b1792382c3607d98cc84df1d..2fcef7bc73b31fd177eb6f2b7bee0fc448e3761f 100644
--- a/pkg/analyzer/lib/src/generated/incremental_resolver.dart
+++ b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
@@ -23,7 +23,7 @@ import 'package:analyzer/src/task/dart.dart'
         VERIFY_ERRORS;
 import 'package:analyzer/task/dart.dart'
     show DART_ERRORS, LibrarySpecificUnit, PARSED_UNIT, TOKEN_STREAM;
-import 'package:analyzer/task/general.dart' show CONTENT;
+import 'package:analyzer/task/general.dart' show CONTENT, LINE_INFO;
 import 'package:analyzer/task/model.dart' show ResultDescriptor;
 
 import 'ast.dart';
@@ -1275,6 +1275,7 @@ class PoorMansIncrementalResolver {
   int _updateEndOld;
   int _updateEndNew;
 
+  LineInfo _newLineInfo;
   List<AnalysisError> _newScanErrors = <AnalysisError>[];
   List<AnalysisError> _newParseErrors = <AnalysisError>[];
 
@@ -1509,6 +1510,7 @@ class PoorMansIncrementalResolver {
     CharSequenceReader reader = new CharSequenceReader(code);
     Scanner scanner = new Scanner(_unitSource, reader, errorListener);
     Token token = scanner.tokenize();
+    _newLineInfo = new LineInfo(scanner.lineStarts);
     _newScanErrors = errorListener.errors;
     return token;
   }
@@ -1565,6 +1567,7 @@ class PoorMansIncrementalResolver {
     _newSourceEntry.setState(SCAN_ERRORS, CacheState.INVALID);
     List<TargetedResult> scanDeps =
         <TargetedResult>[new TargetedResult(_unitSource, CONTENT)];
+    _newSourceEntry.setValue(LINE_INFO, _newLineInfo, scanDeps);
     _newSourceEntry.setValue(SCAN_ERRORS, _newScanErrors, scanDeps);
     // parse results
     List<TargetedResult> parseDeps =
@@ -1575,6 +1578,7 @@ class PoorMansIncrementalResolver {
   }
 
   void _updateEntry_OLD() {
+    _oldEntry.setValue(SourceEntry.LINE_INFO, _newLineInfo);
     _oldEntry.setValue(DartEntry.SCAN_ERRORS, _newScanErrors);
     _oldEntry.setValue(DartEntry.PARSE_ERRORS, _newParseErrors);
   }