Fix licensing headers and move most third party code to third_party/...

git-try

 #!/usr/bin/python
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+# Copyright (c) 2010 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.
 """Wrapper for trychange.py for git checkout."""
 
 import logging
 import sys
 
-try:
-  import breakpad
-except ImportError:
-  pass
+import breakpad
 
 from scm import GIT
 import trychange
 
 
 def GetRietveldIssueNumber():
   return GIT.Capture(
       ['config', 'branch.%s.rietveldissue' % GIT.GetBranch(None)],
       error_ok=True)[0]
 
@@ skipping 17 matching lines @@
         '--issue', GetRietveldIssueNumber(),
         '--patchset', patchset,
     ])
   else:
     rietveld_url = GetRietveldServerUrl()
     if rietveld_url:
       args.extend(['--rietveld_url', GetRietveldServerUrl()])
   # Hack around a limitation in logging.
   logging.getLogger().handlers = []
   sys.exit(trychange.TryChange(args, [], False, 'git-try'))