Oilpan: disable stack depth assert with ASan enabled.

Source/platform/heap/Visitor.h

Index: Source/platform/heap/Visitor.h
diff --git a/Source/platform/heap/Visitor.h b/Source/platform/heap/Visitor.h
index 28d92bf424abfdf12e5a8bb6aff36bdb137d79b8..969d25f78d2edadbbba48c3e45c3fa73c218e77f 100644
--- a/Source/platform/heap/Visitor.h
+++ b/Source/platform/heap/Visitor.h
@@ -765,10 +765,17 @@ public:
             // Assert against deep stacks so as to flush them out,
             // but test and appropriately handle them should they occur
             // in release builds.
+            //
+            // ASan adds extra stack usage, so disable the assert when it is
+            // enabled so as to avoid testing against a much lower & too low,
+            // stack depth threshold.
+            //
             // FIXME: visitor->isMarked(t) exception is to allow empty trace()
             // calls from HashTable weak processing. Remove the condition once
             // it is refactored.
+#if !defined(ADDRESS_SANITIZER)
             ASSERT(visitor->canTraceEagerly() || visitor->isMarked(t));
+#endif
             if (LIKELY(visitor->canTraceEagerly())) {
                 if (visitor->ensureMarked(t)) {
                     TraceTrait<T>::trace(visitor, const_cast<T*>(t));