Oilpan: disable stack depth assert with ASan enabled.

Source/platform/heap/Visitor.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 747 matching lines @@
         //
         // If the trait allows it, invoke the trace callback right here on the
         // not-yet-marked object.
         if (TraceEagerlyTrait<T>::value) {
             // Protect against too deep trace call chains, and the
             // unbounded system stack usage they can bring about.
             //
             // 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));
                 }
                 return;
             }
         }
         visitor->mark(const_cast<T*>(t), &TraceTrait<T>::trace);
     }
 
@@ skipping 202 matching lines @@
 struct GCInfoTrait {
     static size_t index()
     {
         return GCInfoAtBase<typename GetGarbageCollectedBase<T>::type>::index();
     }
 };
 
 }
 
 #endif