Add UMA histograms and logging for bad IPC message handling

tools/metrics/actions/extract_actions.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.
 
 """Extract UserMetrics "actions" strings from the Chrome source.
 
 This program generates the list of known actions we expect to see in the
 user behavior logs.  It walks the Chrome source, looking for calls to
@@ skipping 565 matching lines @@
   # Walk the source tree to process all .cc files.
   ash_root = os.path.normpath(os.path.join(REPOSITORY_ROOT, 'ash'))
   WalkDirectory(ash_root, actions, EXTENSIONS, GrepForActions)
   chrome_root = os.path.normpath(os.path.join(REPOSITORY_ROOT, 'chrome'))
   WalkDirectory(chrome_root, actions, EXTENSIONS, GrepForActions)
   content_root = os.path.normpath(os.path.join(REPOSITORY_ROOT, 'content'))
   WalkDirectory(content_root, actions, EXTENSIONS, GrepForActions)
   components_root = os.path.normpath(os.path.join(REPOSITORY_ROOT,
                     'components'))
   WalkDirectory(components_root, actions, EXTENSIONS, GrepForActions)
+  extensions_root = os.path.normpath(os.path.join(REPOSITORY_ROOT,
+                    'extensions'))
+  WalkDirectory(extensions_root, actions, EXTENSIONS, GrepForActions)
   net_root = os.path.normpath(os.path.join(REPOSITORY_ROOT, 'net'))
   WalkDirectory(net_root, actions, EXTENSIONS, GrepForActions)
   webkit_root = os.path.normpath(os.path.join(REPOSITORY_ROOT, 'webkit'))
   WalkDirectory(os.path.join(webkit_root, 'glue'), actions, EXTENSIONS,
                 GrepForActions)
   WalkDirectory(os.path.join(webkit_root, 'port'), actions, EXTENSIONS,
                 GrepForActions)
 
 def AddWebUIActions(actions):
   """Add user actions defined in WebUI files.
@@ skipping 248 matching lines @@
 
   return PrettyPrint(actions, actions_dict, comment_nodes)
 
 
 def main(argv):
   presubmit_util.DoPresubmitMain(argv, 'actions.xml', 'actions.old.xml',
                                  'extract_actions.py', UpdateXml)
 
 if '__main__' == __name__:
   sys.exit(main(sys.argv))