Fix extension id calculation to take into account Windows encoding.

tools/crx_id/crx_id_unittest.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.
 
 """Verify that crx_id.py generates a reasonable string for a canned CRX file.
 """
 
 import crx_id
@@ skipping 45 matching lines @@
     self.assertEqual(crx_id.GetCRXHash(temp_unpacked_crx),
                      self.UNPACKED_HASH_BYTES)
     self.assertTrue(crx_id.HasPublicKey(temp_unpacked_crx))
     shutil.rmtree(temp_unpacked_crx)
 
   def testFromFilePath(self):
     """ Test calculation of extension id from file paths. """
     self.assertEqual(crx_id.GetCRXAppID('/tmp/temp_extension',
                                         from_file_path=True),
                      'ajbbicncdkdlchpjplgjaglppbcbmaji')
+
+  def testFromWindowsPath(self):
+    self.assertEqual(crx_id.GetCRXAppID(r'D:\Documents\chrome\test_extension',
+                                        from_file_path=True,
+                                        is_win_path=True),
+                     'fegemedmbnhglnecjgbdhekaghkccplm')
+
     # Test drive letter normalization.
-    kWinPathId = 'popnagglbbhjlobnnbcjnckakjoegnjp'
-    self.assertEqual(crx_id.GetCRXAppID('c:\temp_extension',
-                                        from_file_path=True),
+    kWinPathId = 'aiinlcdagjihibappcdnnhcccdokjlaf'
+    self.assertEqual(crx_id.GetCRXAppID(r'c:\temp_extension',
+                                        from_file_path=True,
+                                        is_win_path=True),
                      kWinPathId)
-    self.assertEqual(crx_id.GetCRXAppID('C:\temp_extension',
-                                        from_file_path=True),
+    self.assertEqual(crx_id.GetCRXAppID(r'C:\temp_extension',
+                                        from_file_path=True,
+                                        is_win_path=True),
                      kWinPathId)
 
 if __name__ == '__main__':
   unittest.main()