Serialize and resynthesize labels.

pkg/analyzer/lib/src/summary/resynthesize.dart

Index: pkg/analyzer/lib/src/summary/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index be97bfb0d091b1169d926c789a362dbf04581183..ed4f0da6ff2967bbecd0a6cf7750a9bf3d815fa1 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -1162,6 +1162,8 @@ class _LibraryResynthesizer {
     buildAnnotations(executableElement, serializedExecutable.annotations);
     executableElement.functions =
         serializedExecutable.localFunctions.map(buildLocalFunction).toList();
+    executableElement.labels =
+        serializedExecutable.localLabels.map(buildLocalLabel).toList();
     executableElement.localVariables =
         serializedExecutable.localVariables.map(buildLocalVariable).toList();
     currentTypeParameters.removeLast();
@@ -1479,6 +1481,17 @@ class _LibraryResynthesizer {
   }
 
   /**
+   * Resynthesize a [LabelElement].
+   */
+  LabelElement buildLocalLabel(UnlinkedLabel serializedLabel) {
+    return new LabelElementImpl(
+        serializedLabel.name,
+        serializedLabel.nameOffset,
+        serializedLabel.isOnSwitchStatement,
+        serializedLabel.isOnSwitchMember);
+  }
+
+  /**
    * Resynthesize a [LocalVariableElement].
    */
   LocalVariableElement buildLocalVariable(UnlinkedVariable serializedVariable) {