Remove TSan annotations from base/, because ThreadSanitizer v2 doesn't need base::subtle to be anno…

base/lazy_instance.h

 // Copyright (c) 2012 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.
 
 // The LazyInstance<Type, Traits> class manages a single instance of Type,
 // which will be lazily created on the first time it's accessed.  This class is
 // useful for places you would normally use a function-level static, but you
 // need to have guaranteed thread-safety.  The Type constructor will only ever
 // be called once, even if two threads are racing to create the object.  Get()
 // and Pointer() will always return the same, completely initialized instance.
@@ skipping 25 matching lines @@
 #define BASE_LAZY_INSTANCE_H_
 
 #include <new>  // For placement new.
 
 #include "base/atomicops.h"
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
 #include "base/memory/aligned_memory.h"
-#include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/threading/thread_restrictions.h"
 
 // LazyInstance uses its own struct initializer-list style static
 // initialization, as base's LINKER_INITIALIZED requires a constructor and on
 // some compilers (notably gcc 4.4) this still ends up needing runtime
 // initialization.
 #define LAZY_INSTANCE_INITIALIZER {0}
 
 namespace base {
 
@@ skipping 102 matching lines @@
     // CompleteLazyInstance().
     subtle::AtomicWord value = subtle::Acquire_Load(&private_instance_);
     if (!(value & kLazyInstanceCreatedMask) &&
         internal::NeedsLazyInstance(&private_instance_)) {
       // Create the instance in the space provided by |private_buf_|.
       value = reinterpret_cast<subtle::AtomicWord>(
           Traits::New(private_buf_.void_data()));
       internal::CompleteLazyInstance(&private_instance_, value, this,
                                      Traits::kRegisterOnExit ? OnExit : NULL);
     }
-
-    // This annotation helps race detectors recognize correct lock-less
-    // synchronization between different threads calling Pointer().
-    // We suggest dynamic race detection tool that "Traits::New" above
-    // and CompleteLazyInstance(...) happens before "return instance()" below.
-    // See the corresponding HAPPENS_BEFORE in CompleteLazyInstance(...).
-    ANNOTATE_HAPPENS_AFTER(&private_instance_);
     return instance();
   }
 
   bool operator==(Type* p) {
     switch (subtle::NoBarrier_Load(&private_instance_)) {
       case 0:
         return p == NULL;
       case internal::kLazyInstanceStateCreating:
         return static_cast<void*>(p) == private_buf_.void_data();
       default:
@@ skipping 21 matching lines @@
     LazyInstance<Type, Traits>* me =
         reinterpret_cast<LazyInstance<Type, Traits>*>(lazy_instance);
     Traits::Delete(me->instance());
     subtle::NoBarrier_Store(&me->private_instance_, 0);
   }
 };
 
 }  // namespace base
 
 #endif  // BASE_LAZY_INSTANCE_H_