Remove uses of std::unary_function and std::binary_function.

content/browser/appcache/appcache_storage_impl.cc

Index: content/browser/appcache/appcache_storage_impl.cc
diff --git a/content/browser/appcache/appcache_storage_impl.cc b/content/browser/appcache/appcache_storage_impl.cc
index b144eb69f519e767f64f265954bcb9c65f5c7fd9..2a255edc2d4b120ab2f8ef4fe9bd5ff58b98a2b6 100644
--- a/content/browser/appcache/appcache_storage_impl.cc
+++ b/content/browser/appcache/appcache_storage_impl.cc
@@ -837,11 +837,7 @@ void AppCacheStorageImpl::StoreGroupAndCacheTask::CancelCompletion() {
 
 // Helpers for FindMainResponseTask::Run()
 namespace {
-class SortByCachePreference
-    : public std::binary_function<
-        AppCacheDatabase::EntryRecord,
-        AppCacheDatabase::EntryRecord,
-        bool> {
+class SortByCachePreference {
  public:
   SortByCachePreference(int64_t preferred_id,
                         const std::set<int64_t>& in_use_ids)