Use C++11 alignment primitives

base/lazy_instance.h

Index: base/lazy_instance.h
diff --git a/base/lazy_instance.h b/base/lazy_instance.h
index 070e436d1f0c5a74534ba8fb1a8535a29db789e0..20a2336c0e4facee197381488e78064cd5b1610a 100644
--- a/base/lazy_instance.h
+++ b/base/lazy_instance.h
@@ -36,12 +36,12 @@
 #define BASE_LAZY_INSTANCE_H_
 
 #include <new>  // For placement new.
+#include <type_traits>
 
 #include "base/atomicops.h"
 #include "base/base_export.h"
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
-#include "base/memory/aligned_memory.h"
 #include "base/threading/thread_restrictions.h"
 
 // LazyInstance uses its own struct initializer-list style static
@@ -55,7 +55,7 @@ namespace base {
 template <typename Type>
 struct LazyInstanceTraitsBase {
   static Type* New(void* instance) {
-    DCHECK_EQ(reinterpret_cast<uintptr_t>(instance) & (ALIGNOF(Type) - 1), 0u);
+    DCHECK_EQ(reinterpret_cast<uintptr_t>(instance) & (alignof(Type) - 1), 0u);
     // Use placement new to initialize our instance in our preallocated space.
     // The parenthesis is very important here to force POD type initialization.
     return new (instance) Type();
@@ -179,8 +179,7 @@ class LazyInstance {
     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()));
+      value = reinterpret_cast<subtle::AtomicWord>(Traits::New(&private_buf_));
       internal::CompleteLazyInstance(&private_instance_, value, this,
                                      Traits::kRegisterOnExit ? OnExit : NULL);
     }
@@ -192,7 +191,7 @@ class LazyInstance {
       case 0:
         return p == NULL;
       case internal::kLazyInstanceStateCreating:
-        return static_cast<void*>(p) == private_buf_.void_data();
+        return static_cast<void*>(p) == &private_buf_;
       default:
         return p == instance();
     }
@@ -204,7 +203,7 @@ class LazyInstance {
 
   subtle::AtomicWord private_instance_;
   // Preallocated space for the Type instance.
-  base::AlignedMemory<sizeof(Type), ALIGNOF(Type)> private_buf_;
+  typename std::aligned_storage<sizeof(Type), alignof(Type)>::type private_buf_;
 
  private:
   Type* instance() {