stdint types all the way!

Change-Id: I4e4ef3a2002fc59ebd9097087f150eaf3f2a7e08
diff --git a/runtime/gc/space/valgrind_malloc_space.h b/runtime/gc/space/valgrind_malloc_space.h
index 200ad83..eb6fe9c 100644
--- a/runtime/gc/space/valgrind_malloc_space.h
+++ b/runtime/gc/space/valgrind_malloc_space.h
@@ -47,7 +47,7 @@
   }
 
   ValgrindMallocSpace(const std::string& name, MemMap* mem_map, AllocatorType allocator,
-                      byte* begin, byte* end, byte* limit, size_t growth_limit,
+                      uint8_t* begin, uint8_t* end, uint8_t* limit, size_t growth_limit,
                       size_t initial_size, bool can_move_objects, size_t starting_size);
   virtual ~ValgrindMallocSpace() {}