Allow std::unordered_*.

ui/gfx/generic_shared_memory_id.h

Index: ui/gfx/generic_shared_memory_id.h
diff --git a/ui/gfx/generic_shared_memory_id.h b/ui/gfx/generic_shared_memory_id.h
index 51f553b2ddafb59aa88b38393cddede3910f53c0..b18c869e2cc61bea825ba0d15a588accf00cb68d 100644
--- a/ui/gfx/generic_shared_memory_id.h
+++ b/ui/gfx/generic_shared_memory_id.h
@@ -8,6 +8,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include "base/containers/hash_tables.h"
+#include "base/hash.h"
 #include "base/trace_event/memory_allocator_dump.h"
 #include "ui/gfx/gfx_export.h"
 
@@ -58,7 +60,7 @@ template <typename Second>
 struct hash<std::pair<gfx::GenericSharedMemoryId, Second>> {
   size_t operator()(
       const std::pair<gfx::GenericSharedMemoryId, Second>& pair) const {
-    return base::HashPair(pair.first.id, pair.second);
+    return base::HashInts(pair.first.id, pair.second);
   }
 };