Add ASan exemption when iterating cross-thread-persistents.

third_party/WebKit/Source/platform/heap/Persistent.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef Persistent_h
 #define Persistent_h
 
 #include "platform/heap/Member.h"
 #include "platform/heap/PersistentNode.h"
 #include "wtf/Allocator.h"
@@ skipping 139 matching lines @@
     {
         if (m_persistentNode) {
             ASSERT(ThreadState::current());
             ThreadState::current()->registerStaticPersistentNode(m_persistentNode, nullptr);
             LEAK_SANITIZER_IGNORE_OBJECT(this);
         }
         return this;
     }
 
 protected:
+    NO_SANITIZE_ADDRESS
     T* atomicGet() { return reinterpret_cast<T*>(acquireLoad(reinterpret_cast<void* volatile*>(&m_raw))); }
 
 private:
     NO_LAZY_SWEEP_SANITIZE_ADDRESS
     void assign(T* ptr)
     {
         if (crossThreadnessConfiguration == CrossThreadPersistentConfiguration)
             releaseStore(reinterpret_cast<void* volatile*>(&m_raw), ptr);
         else
             m_raw = ptr;
@@ skipping 574 matching lines @@
     // into it.
     //
     // TODO(sof): remove this hack once wtf/Functional.h can also work with a type like
     // CrossThreadWeakPersistent<>.
     static WeakPtr<T> unwrap(const StorageType& value) { return WeakPtr<T>(WeakReference<T>::create(value.get())); }
 };
 
 } // namespace WTF
 
 #endif // Persistent_h