Fix grit to substitute GRIT_DIR properly on Windows.

grit/node/misc.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Miscellaneous node types.
 """
 
 import os.path
 import re
@@ skipping 310 matching lines @@
 
     The first_ids_file attribute is by default relative to the
     base_dir of the .grd file, but may be prefixed by GRIT_DIR/,
     which makes it relative to the directory of grit.py
     (e.g. GRIT_DIR/../gritsettings/resource_ids).
     """
     if not self.attrs['first_ids_file']:
       return None
 
     path = self.attrs['first_ids_file']
-    GRIT_DIR_PREFIX = 'GRIT_DIR/'
-    if path.startswith(GRIT_DIR_PREFIX):
-      return util.PathFromRoot(path[len(GRIT_DIR_PREFIX):])
+    GRIT_DIR_PREFIX = 'GRIT_DIR'
+    if (path.startswith(GRIT_DIR_PREFIX)
+        and path[len(GRIT_DIR_PREFIX)] in ['/', '\\']):
+      return util.PathFromRoot(path[len(GRIT_DIR_PREFIX) + 1:])
     else:
       return self.ToRealPath(path)
 
   def GetOutputFiles(self):
     """Returns the list of <output> nodes that are descendants of this node's
     <outputs> child and are not enclosed by unsatisfied <if> conditionals.
     """
     for child in self.children:
       if child.name == 'outputs':
         return [node for node in child.ActiveDescendants()
@@ skipping 160 matching lines @@
     by parameters of the same name.
     """
     node = IdentifierNode()
     node.StartParsing('identifier', parent)
     node.HandleAttribute('name', name)
     node.HandleAttribute('id', id)
     node.HandleAttribute('comment', comment)
     node.HandleAttribute('systemid', systemid)
     node.EndParsing()
     return node