Remove last usage functions from HostContentSettingsMap

components/content_settings/core/browser/host_content_settings_map.h

Index: components/content_settings/core/browser/host_content_settings_map.h
diff --git a/components/content_settings/core/browser/host_content_settings_map.h b/components/content_settings/core/browser/host_content_settings_map.h
index 3eeafe48ca1024920d6b2f15445095e4192246bc..29d568224f841384a578461160481a4370916208 100644
--- a/components/content_settings/core/browser/host_content_settings_map.h
+++ b/components/content_settings/core/browser/host_content_settings_map.h
@@ -189,42 +189,6 @@ class HostContentSettingsMap : public content_settings::Observer,
     return is_off_the_record_;
   }
 
-  // Returns a single |ContentSetting| which applies to the given URLs, just as
-  // |GetContentSetting| does. If the setting is allowed, it also records the
-  // last usage to preferences.
-  //
-  // This should only be called on the UI thread, unlike |GetContentSetting|.
-  ContentSetting GetContentSettingAndMaybeUpdateLastUsage(
-      const GURL& primary_url,
-      const GURL& secondary_url,
-      ContentSettingsType content_type,
-      const std::string& resource_identifier);
-
-  // Sets the last time that a given content type has been used for the pattern
-  // which matches the URLs to the current time.
-  void UpdateLastUsage(const GURL& primary_url,
-                       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,
-                          const GURL& secondary_url,
-                          ContentSettingsType content_type);
-
-  // Returns the last time the pattern has requested permission for the
-  // |content_type| setting.
-  base::Time GetLastUsageByPattern(
-      const ContentSettingsPattern& primary_pattern,
-      const ContentSettingsPattern& secondary_pattern,
-      ContentSettingsType content_type);
-
   // Adds/removes an observer for content settings changes.
   void AddObserver(content_settings::Observer* observer);
   void RemoveObserver(content_settings::Observer* observer);