Extract the SafeSearch client to a separate directory

chrome/browser/supervised_user/supervised_user_url_filter.h

Index: chrome/browser/supervised_user/supervised_user_url_filter.h
diff --git a/chrome/browser/supervised_user/supervised_user_url_filter.h b/chrome/browser/supervised_user/supervised_user_url_filter.h
index 7e5019338325143913604965efa4e9f0fac79dc0..21da8831f444aa55ff3800bc459ebdb831e461d7 100644
--- a/chrome/browser/supervised_user/supervised_user_url_filter.h
+++ b/chrome/browser/supervised_user/supervised_user_url_filter.h
@@ -16,6 +16,7 @@
 #include "base/observer_list.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
+#include "chrome/browser/safe_search_api/safe_search_url_checker.h"
 #include "chrome/browser/supervised_user/supervised_user_site_list.h"
 #include "chrome/browser/supervised_user/supervised_users.h"
 #include "components/supervised_user_error_page/supervised_user_error_page.h"
@@ -28,7 +29,6 @@ class URLRequestContextGetter;
 }
 
 class GURL;
-class SupervisedUserAsyncURLChecker;
 
 // This class manages the filtering behavior for a given URL, i.e. it tells
 // callers if a given URL should be allowed, blocked or warned about. It uses
@@ -185,7 +185,7 @@ class SupervisedUserURLFilter
 
   void CheckCallback(const FilteringBehaviorCallback& callback,
                      const GURL& url,
-                     FilteringBehavior behavior,
+                     SafeSearchURLChecker::Classification classification,
                      bool uncertain) const;
 
   // This is mutable to allow notification in const member functions.
@@ -205,7 +205,7 @@ class SupervisedUserURLFilter
   // Not owned.
   const SupervisedUserBlacklist* blacklist_;
 
-  std::unique_ptr<SupervisedUserAsyncURLChecker> async_url_checker_;
+  std::unique_ptr<SafeSearchURLChecker> async_url_checker_;
 
   scoped_refptr<base::TaskRunner> blocking_task_runner_;