Fix in analyzer for consecutively labeled case statments.

compiler/java/com/google/dart/compiler/parser/DartParser.java

Index: compiler/java/com/google/dart/compiler/parser/DartParser.java
diff --git a/compiler/java/com/google/dart/compiler/parser/DartParser.java b/compiler/java/com/google/dart/compiler/parser/DartParser.java
index 8fb0716a93ab58ef74f8614d319a1b3fcd108005..12762bf7860bdb0442fc9b8332282b6dc17244f7 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartParser.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartParser.java
@@ -3930,6 +3930,11 @@ public class DartParser extends CompletionHooksParserBase {
         case RBRACE:
         case EOS:
           return statements;
+        case IDENTIFIER:
+          // Handle consecutively labelled case statements
+          if (peek(1).equals(Token.COLON) && peek(2).equals(Token.CASE)) {
+            return statements;
+          }
         default:
           boolean oldInCaseStatement = inCaseStatement;
           inCaseStatement = true;