Unbreak SDK frogc.

dart/frog/leg/source_file.dart

 // Copyright (c) 2012, 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.
 
 #library('source_file');
 
-#import('../../frog/leg/colors.dart');
+#import('colors.dart');
 
 /**
  * Represents a file of source code.
  */
 class SourceFile {
 
   /** The name of the file. */
   final String filename;
 
   /** The text content of the file. */
@@ skipping 71 matching lines @@
       if (useColors) buf.add(RED_COLOR);
       for (; i < toColumn; i++) {
         buf.add('^');
       }
       if (useColors) buf.add(NO_COLOR);
     }
 
     return buf.toString();
   }
 }