Introducing the activityLogPrivate.deleteActivities() API call.

chrome/browser/extensions/activity_log/counting_policy.h

Index: chrome/browser/extensions/activity_log/counting_policy.h
diff --git a/chrome/browser/extensions/activity_log/counting_policy.h b/chrome/browser/extensions/activity_log/counting_policy.h
index a2e0795418d08e4a4c178cde7e7203ff83492705..2c77f1641a4cd73eb53a38e311ffb4be624c44b4 100644
--- a/chrome/browser/extensions/activity_log/counting_policy.h
+++ b/chrome/browser/extensions/activity_log/counting_policy.h
@@ -45,6 +45,9 @@ class CountingPolicy : public ActivityLogDatabasePolicy {
     retention_time_ = delta;
   }
 
+  // Remove actions (rows) which IDs are specified in the action_ids array.
+  virtual void RemoveActions(const std::vector<int64>& action_ids) OVERRIDE;
+
   // Clean the URL data stored for this policy.
   virtual void RemoveURLs(const std::vector<GURL>&) OVERRIDE;
 
@@ -91,6 +94,10 @@ class CountingPolicy : public ActivityLogDatabasePolicy {
       const std::string& arg_url,
       const int days_ago);
 
+  // The implementation of RemoveActions; this must only run on the database
+  // thread.
+  void DoRemoveActions(const std::vector<int64>& action_ids);
+
   // The implementation of RemoveURLs; this must only run on the database
   // thread.
   void DoRemoveURLs(const std::vector<GURL>& restrict_urls);