Audit the last time the media stream content settings have been used.

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 915c4a7582da102720c2dd9bdb0aecd22d816c5d..148e325bb554f9830763cffd93ad8acfb2ab0aee 100644
--- a/chrome/browser/content_settings/host_content_settings_map.h
+++ b/chrome/browser/content_settings/host_content_settings_map.h
@@ -218,6 +218,12 @@ class HostContentSettingsMap
                        const GURL& secondary_url,
                        ContentSettingsType content_type);
 
+  // Sets the last time that a given content type has been used for a pattern
+  // pair to the current time.
+  void UpdateLastUsageByPattern(const ContentSettingsPattern& primary_pattern,
+                                const ContentSettingsPattern& secondary_pattern,
+                                ContentSettingsType content_type);
+
   // Returns the last time the pattern that matches the URL has requested
   // permission for the |content_type| setting.
   base::Time GetLastUsage(const GURL& primary_url,
@@ -271,12 +277,6 @@ class HostContentSettingsMap
   // it is not being called too late.
   void UsedContentSettingsProviders() const;
 
-  // Convenience method for updating the last usage of a content type for a
-  // pattern.
-  void UpdateLastUsageByPattern(const ContentSettingsPattern& primary_pattern,
-                                const ContentSettingsPattern& secondary_pattern,
-                                ContentSettingsType content_type);
-
   content_settings::PrefProvider* GetPrefProvider();
 
 #ifndef NDEBUG