Support for native in leg, and start moving native tests to a specific test suite.

frog/leg/scanner/partial_parser.dart

Index: frog/leg/scanner/partial_parser.dart
===================================================================
--- frog/leg/scanner/partial_parser.dart	(revision 4390)
+++ frog/leg/scanner/partial_parser.dart	(working copy)
@@ -5,7 +5,7 @@
 class PartialParser extends Parser {
   PartialParser(Listener listener) : super(listener);
 
-  Token parseClassBody(Token token) => skipBlock(token);
+  Token parseClassBody(Token token) => skipClassBody(token);
 
   Token fullParseClassBody(Token token) => super.parseClassBody(token);
 
@@ -30,6 +30,16 @@
     }
   }
 
+  Token skipClassBody(Token token) {
+    if (!optional('{', token)) {
+      return listener.expectedClassBodyToSkip(token);
+    }
+    BeginGroupToken beginGroupToken = token;
+    assert(beginGroupToken.endGroup === null ||
+           beginGroupToken.endGroup.kind === $CLOSE_CURLY_BRACKET);
+    return beginGroupToken.endGroup;
+  }
+
   Token parseFunctionBody(Token token, bool isExpression) {
     assert(!isExpression);
     String value = token.stringValue;