Fix "notificiation" and "soruce" typos.

tools/nocompile_driver.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 """Implements a simple "negative compile" test for C++ on linux.
 
 Sometimes a C++ API needs to ensure that various usages cannot compile. To
 enable unittesting of these assertions, we use this python script to
 invoke gcc on a source file and assert that compilation fails.
@@ skipping 103 matching lines @@
   assert type(raw_expectation) is list
 
   expectation = []
   for regex_str in raw_expectation:
     assert type(regex_str) is str
     expectation.append(re.compile(regex_str))
   return expectation
 
 
 def ExtractTestConfigs(sourcefile_path, suite_name):
-  """Parses the soruce file for test configurations.
+  """Parses the source file for test configurations.
 
   Each no-compile test in the file is separated by an ifdef macro.  We scan
   the source file with the NCTEST_CONFIG_RE to find all ifdefs that look like
   they demark one no-compile test and try to extract the test configuration
   from that.
 
   Args:
     sourcefile_path: The path to the source file.
     suite_name: The name of the test suite.
 
@@ skipping 342 matching lines @@
   if return_code == 0:
     with open(resultfile_path, 'w') as fd:
       fd.write(resultfile.getvalue())
 
   resultfile.close()
   sys.exit(return_code)
 
 
 if __name__ == '__main__':
   main()