1 files changed, 6 insertions, 39 deletions
diff --git a/content/public/browser/user_metrics.h b/content/public/browser/user_metrics.h
index e9480ac..118d8a9 100644
--- a/content/public/browser/user_metrics.h
+++ b/content/public/browser/user_metrics.h
@@ -8,50 +8,17 @@
 #include <string>
 
 #include "base/callback.h"
+#include "base/metrics/user_metrics_action.h"
 #include "content/common/content_export.h"
-#include "content/public/common/user_metrics_action.h"
 
 namespace content {
 
-// This module provides some helper functions for logging actions tracked by
-// the user metrics system.
-
-// Record that the user performed an action.
-// "Action" here means a user-generated event:
-//   good: "Reload", "CloseTab", and "IMEInvoked"
-//   not good: "SSLDialogShown", "PageLoaded", "DiskFull"
-// We use this to gather anonymized information about how users are
-// interacting with the browser.
-// WARNING: In calls to this function, UserMetricsAction and a
-// string literal parameter must be on the same line, e.g.
-//   content::RecordAction(
-//       content::UserMetricsAction("my extremely long action name"));
-// This ensures that our processing scripts can associate this action's hash
-// with its metric name. Therefore, it will be possible to retrieve the metric
-// name from the hash later on.
-//
-// Once a new recorded action is added, run
-// tools/metrics/actions/extract_actions.py --hash
-// to generate a new mapping of [action hashes -> metric names] and send it
-// out for review to be updated.
-//
-// For more complicated situations (like when there are many different
-// possible actions), see RecordComputedAction.
-CONTENT_EXPORT void RecordAction(const UserMetricsAction& action);
-
-// This function has identical input and behavior to RecordAction, but is
-// not automatically found by the action-processing scripts.  It can be used
-// when it's a pain to enumerate all possible actions, but if you use this
-// you need to also update the rules for extracting known actions in
-// tools/metrics/actions/extract_actions.py.
-CONTENT_EXPORT void RecordComputedAction(const std::string& action);
-
-// Called with the action string.
-typedef base::Callback<void(const std::string&)> ActionCallback;
+// Wrappers around functions defined in base/metrics/user_metrics.h, refer to
+// that header for full documentation. These wrappers can be called from any
+// thread (they will post back to the UI thread to do the recording).
 
-// Add/remove action callbacks (see above).
-CONTENT_EXPORT void AddActionCallback(const ActionCallback& callback);
-CONTENT_EXPORT void RemoveActionCallback(const ActionCallback& callback);
+CONTENT_EXPORT void RecordAction(const base::UserMetricsAction& action);
+CONTENT_EXPORT void RecordComputedAction(const std::string& action);
 
 }  // namespace content