Fix event sending in pdfium_test.

testing/tools/run_corpus_tests.py

 #!/usr/bin/env python
 # Copyright 2015 The PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import cStringIO
 import functools
 import multiprocessing
 import optparse
 import os
@@ skipping 24 matching lines @@
   for image in actual_images:
     if os.path.exists(image):
       os.remove(image)
 
   shutil.copyfile(input_path, pdf_path)
   sys.stdout.flush()
   # add Dr. Memory wrapper if exist
   # remove .pdf suffix
   cmd_to_run = common.DrMemoryWrapper(drmem_wrapper,
                                       os.path.splitext(input_filename)[0])
-  cmd_to_run.extend([pdfium_test_path, '--png', pdf_path])
-  # run test
+  cmd_to_run.extend([pdfium_test_path, '--send-events', '--png', pdf_path])
   error = common.RunCommand(cmd_to_run)
   if error:
     print "FAILURE: " + input_filename + "; " + str(error)
     return False
   return not image_differ.HasDifferences(input_filename, source_dir, working_dir)
 
 
 def test_one_file_parallel(working_dir, pdfium_test_path, image_differ,
                            test_case):
   """Wrapper function to call test_one_file() and redirect output to stdout."""
@@ skipping 101 matching lines @@
     print '\n\nSummary of Failures:'
     for failure in failures:
       print failure
     return 1
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())