Audit the last usage of Geolocation and Notification permissions.

chrome/browser/content_settings/host_content_settings_map.h

Index: chrome/browser/content_settings/host_content_settings_map.h
diff --git a/chrome/browser/content_settings/host_content_settings_map.h b/chrome/browser/content_settings/host_content_settings_map.h
index 8d5681a1536a92a9e18978146b253f66554431db..e7e39dbb558c67daa959d9315a3855a5bde1ef35 100644
--- a/chrome/browser/content_settings/host_content_settings_map.h
+++ b/chrome/browser/content_settings/host_content_settings_map.h
@@ -199,6 +199,10 @@ class HostContentSettingsMap
     return is_off_the_record_;
   }
 
+  void UpdateLastUsage(const GURL& primary_url,

[dewittj, 2014/06/26 15:56:51]

needs comment

+                       const GURL& secondary_url,
+                       ContentSettingsType content_type);
+
  private:
   friend class base::RefCountedThreadSafe<HostContentSettingsMap>;
   friend class HostContentSettingsMapTest_NonDefaultSettings_Test;