ART: SHARED_REQUIRES to REQUIRES_SHARED

This coincides with the actual attribute name and upstream usage.
Preparation for deferring to libbase.

Test: m
Test: m test-art-host
Change-Id: Ia8986b5dfd926ba772bf00b0a35eaf83596d8518
diff --git a/runtime/gc/accounting/card_table.h b/runtime/gc/accounting/card_table.h
index b6af908..969bfb7 100644
--- a/runtime/gc/accounting/card_table.h
+++ b/runtime/gc/accounting/card_table.h
@@ -108,7 +108,7 @@
               const Visitor& visitor,
               const uint8_t minimum_age = kCardDirty) const
       REQUIRES(Locks::heap_bitmap_lock_)
-      SHARED_REQUIRES(Locks::mutator_lock_);
+      REQUIRES_SHARED(Locks::mutator_lock_);
 
   // Assertion used to check the given address is covered by the card table
   void CheckAddrIsInCardTable(const uint8_t* addr) const;