Fix 2 recently introduced errors.

trychange.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
 
@@ skipping 133 matching lines @@
     given root. If no root directory is provided, the repository root will be
     used.
     """
     previous_cwd = os.getcwd()
     if root is None:
       os.chdir(gcl.GetRepositoryRoot())
     else:
       os.chdir(root)
 
     # Directories will return None so filter them out.
-    diff = filter(None, [scm.SVN.Diff(f) for f in files])
+    diff = filter(None, [scm.SVN.DiffItem(f) for f in files])
     os.chdir(previous_cwd)
     return "".join(diff)
 
   def GetFileNames(self):
     """Return the list of files in the diff."""
     return self.change_info.GetFileNames()
 
   def GetLocalRoot(self):
     """Return the path of the repository root."""
     return self.change_info.GetLocalRoot()
@@ skipping 399 matching lines @@
   except (InvalidScript, NoTryServerAccess), e:
     if swallow_exception:
       return 1
     print e
     return 1
   return 0
 
 
 if __name__ == "__main__":
   sys.exit(TryChange(None, None, False))