dart2js: accept const map literals as expression statements.

pkg/compiler/lib/src/scanner/parser.dart

Index: pkg/compiler/lib/src/scanner/parser.dart
diff --git a/pkg/compiler/lib/src/scanner/parser.dart b/pkg/compiler/lib/src/scanner/parser.dart
index 057cc3024a64e040f442b419e08c5a0f65e57492..34c8282b5597a16b31265a653a88d72e946a5acb 100644
--- a/pkg/compiler/lib/src/scanner/parser.dart
+++ b/pkg/compiler/lib/src/scanner/parser.dart
@@ -1631,7 +1631,11 @@ class Parser {
     if (isModifier(token.next)) {
       return parseVariablesDeclaration(token);
     }
-    Token identifier = peekIdentifierAfterOptionalType(token.next);

[ahe, 2014/12/12 14:32:41]

peekIdentifierAfterOptionalType is only called once, so it should be handling
this case.

[floitsch, 2014/12/12 14:38:47]

Done.

+
+    Token identifier;
+    if (optional('void', token.next) || token.next.isIdentifier()) {
+      identifier = peekIdentifierAfterOptionalType(token.next);
+    }
     if (identifier != null) {
       assert(identifier.isIdentifier());
       Token afterId = identifier.next;