[Do not commit] Track revocations in content_settings::Observer

chrome/browser/permissions/permission_uma_util.h

Index: chrome/browser/permissions/permission_uma_util.h
diff --git a/chrome/browser/permissions/permission_uma_util.h b/chrome/browser/permissions/permission_uma_util.h
index deee1d70bf852855547ec329d98626741d8be5e2..36a3e559f0a54f5f117b9ad174339f766ea9fe06 100644
--- a/chrome/browser/permissions/permission_uma_util.h
+++ b/chrome/browser/permissions/permission_uma_util.h
@@ -7,7 +7,10 @@
 
 #include "base/logging.h"
 #include "base/macros.h"
+#include "components/content_settings/core/common/content_settings.h"
+#include "components/content_settings/core/common/content_settings_types.h"
 
+class ContentSettingsPattern;
 class GURL;
 class Profile;
 
@@ -33,6 +36,13 @@ class PermissionUmaUtil {
   static void PermissionRevoked(content::PermissionType permission,
                                 const GURL& revoked_origin);
 
+  static void OnContentsettingChanged(
+      Profile* profile,
+      const ContentSettingsPattern& primary_pattern,
+      const ContentSettingsPattern& secondary_pattern,
+      ContentSettingsType content_type,
+      ContentSetting previous_value);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PermissionUmaUtil);
 };