Update the location of extract_actions.py in comments.

chrome/browser/about_flags.cc

 // 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.
 
 #include "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 308 matching lines @@
     cc::switches::kDisableMapImage, ""}
 };
 
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
 // gather statistics about the usage of your flag, you should append a marker
 // comment to the end of the feature name, like so:
 //   "my-special-feature",  // FLAGS:RECORD_UMA
 //
-// After doing that, run //chrome/tools/extract_actions.py (see instructions at
-// the top of that file for details) to update the chromeactions.txt file, which
-// will enable UMA to record your feature flag.
+// After doing that, run //tools/metrics/actions/extract_actions.py (see
+// instructions at the top of that file for details) to update the
+// chromeactions.txt file, which will enable UMA to record your feature flag.
 //
 // After your feature has shipped under a flag, you can locate the metrics under
 // the action name AboutFlags_internal-action-name. Actions are recorded once
 // per startup, so you should divide this number by AboutFlags_StartupTick to
 // get a sense of usage. Note that this will not be the same as number of users
 // with a given feature enabled because users can quit and relaunch the
 // application multiple times over a given time interval. The dashboard also
 // shows you how many (metrics reporting) users have enabled the flag over the
 // last seven days. However, note that this is not the same as the number of
 // users who have the flag enabled, since enabling the flag happens once,
@@ skipping 2010 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags