Move frog/leg to lib/compiler/implementation.

frog/tests/leg/src/ParserTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #import('parser_helper.dart');
-#import("../../../leg/tree/tree.dart");
+#import("../../../../lib/compiler/implementation/tree/tree.dart");
 
 void testStatement(String statement) {
   Node node = parseStatement(statement);
   Expect.isNotNull(node.toString());
 }
 
 void testGenericTypes() {
   testStatement('List<T> t;');
   testStatement('List<List<T>> t;');
   testStatement('List<List<List<T>>> t;');
@@ skipping 244 matching lines @@
   testUnaryExpression();
   testChainedMethodCalls();
   testFunctionStatement();
   testDoStatement();
   testWhileStatement();
   testConditionalExpression();
   testAssignment();
   testIndex();
   testPostfix();
 }