Use a symbol for static length/name (conflicts with Function properties in ES5: cannot redefine Fun…

lib/src/codegen/js_names.dart

Index: lib/src/codegen/js_names.dart
diff --git a/lib/src/codegen/js_names.dart b/lib/src/codegen/js_names.dart
index c84991f6be1f40d124e284be69edac8ded985dc3..b8be9d5c3607e88ba121c96faf95d5463b10184a 100644
--- a/lib/src/codegen/js_names.dart
+++ b/lib/src/codegen/js_names.dart
@@ -287,12 +287,20 @@ bool invalidVariableName(String keyword, {bool strictMode: true}) {
 
 /// Returns true for invalid static field names in strict mode.
 /// In particular, "caller" "callee" and "arguments" cannot be used.
-bool invalidStaticFieldName(String name) {
+///
+/// [closureCompiler] marks some names as invalid for the purpose of ES6->ES5
+/// lowering with the Closure Compiler.
+bool invalidStaticFieldName(String name, {bool closureCompiler: false}) {
   switch (name) {
     case "arguments":
     case "caller":
     case "callee":
       return true;
+    // Workarounds for Closure:
+    // (see https://github.com/google/closure-compiler/issues/1460)
+    case "name":
+    case "length":
+      return closureCompiler;
   }
   return false;
 }