Fix a bug where the flattened HTML file was not getting

tools/grit/grit/node/include.py

 #!/usr/bin/python2.4
 # Copyright (c) 2006-2008 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.
 
 '''Handling of the <include> element.
 '''
 
 import os
 
@@ skipping 39 matching lines @@
     return self.FilenameToOpen()
 
   def GetDataPackPair(self, output_dir, lang):
     '''Returns a (id, string) pair that represents the resource id and raw
     bytes of the data.  This is used to generate the data pack data file.
     '''
     from grit.format import rc_header
     id_map = rc_header.Item.tids_
     id = id_map[self.GetTextualIds()[0]]
     filename = self.FilenameToOpen()
-    if not os.path.exists(filename):
-      # Try to open the file relative to the output dir if it's not relative to
-      # the grd file.
-      filename = os.path.join(output_dir, self.attrs['file'])
+    if self.attrs['flattenhtml'] == 'true':
+      # If the file was flattened, the flattened file is in the output dir.
+      filename = os.path.join(output_dir, os.path.split(filename)[1])
 
     file = open(filename, 'rb')
     data = file.read()
     file.close()
 
     return id, data
 
   # static method
   def Construct(parent, name, type, file, translateable=True, 
       filenameonly=False, relativepath=False):
@@ skipping 10 matching lines @@
     node.HandleAttribute('name', name)
     node.HandleAttribute('type', type)
     node.HandleAttribute('file', file)
     node.HandleAttribute('translateable', translateable)
     node.HandleAttribute('filenameonly', filenameonly)
     node.HandleAttribute('relativepath', relativepath)
     node.EndParsing()
     return node
   Construct = staticmethod(Construct)