diff --git a/buffet/any.h b/buffet/any.h
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+++ b/buffet/any.h
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+// Copyright 2014 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This is an implementation of a "true" variant class in C++.
+// The buffet::Any class can hold any C++ type, but both the setter and
+// getter sites need to know the actual type of data.
+// Note that C-style arrays when stored in Any are reduced to simple
+// data pointers. Any will not copy a contents of the array.
+//    const int data[] = [1,2,3];
+//    Any v(data);  // stores const int*, effectively "Any v(&data[0]);"
+
+// buffet::Any is a value type. Which means, the data is copied into it
+// and Any owns it. The owned object (stored by value) will be destroyed
+// when Any is cleared or reassigned. The contained value type must be
+// copy-constructible. You can also store pointers and references to objects.
+// Storing pointers is trivial. In order to store a reference, you can
+// use helper functions std::ref() and std::cref() to create non-const and
+// const references respectively. In such a case, the type of contained data
+// will be std::reference_wrapper<T>. See 'References' unit tests in
+// any_unittest.cc for examples.
+
+#ifndef BUFFET_ANY_H_
+#define BUFFET_ANY_H_
+
+#include "buffet/any_internal_impl.h"
+
+#include <algorithm>
+
+namespace buffet {
+
+class Any final {
+ public:
+  Any() = default;
+  // Standard copy constructor. This is a value-class container
+  // that must be copy-constructible and movable. The copy constructors
+  // should not be marked as explicit.
+  Any(const Any& rhs);
+  // Typed constructor that stores a value of type T in the Any.
+  template<class T>
+  Any(T value) {        // NOLINT(runtime/explicit)
+    data_buffer_.Assign(std::move(value));
+  }
+
+  // Not declaring the destructor as virtual since this is a sealed class
+  // and there is no need to introduce a virtual table to it.
+  ~Any();
+
+  // Assignment operators.
+  Any& operator=(const Any& rhs);
+  template<class T>
+  Any& operator=(T value) {
+    data_buffer_.Assign(std::move(value));
+    return *this;
+  }
+
+  // Checks if the given type DestType can be obtained from the Any.
+  // For example, to check if Any has a 'double' value in it:
+  //  any.IsTypeCompatible<double>()
+  template<typename DestType>
+  bool IsTypeCompatible() const {
+    // Make sure the requested type DestType conforms to the storage
+    // requirements of Any. We always store the data by value, which means we
+    // strip away any references as well as cv-qualifiers. So, if the user
+    // stores "const int&", we actually store just an "int".
+    // When calling IsTypeCompatible, we need to do a similar "type cleansing"
+    // to make sure the requested type matches the type of data actually stored,
+    // so this "canonical" type is used for type checking below.
+    using CanonicalDestType = typename std::decay<DestType>::type;
+    const std::type_info& ContainedTypeId = GetType();
+    if (typeid(CanonicalDestType) == ContainedTypeId)
+      return true;
+
+    if (!std::is_pointer<CanonicalDestType>::value)
+      return false;
+
+    // If asking for a const pointer from a variant containing non-const
+    // pointer, still satisfy the request. So, we need to remove the pointer
+    // specification first, then strip the const/volatile qualifiers, then
+    // re-add the pointer back, so "const int*" would become "int*".
+    using NonPointer = typename std::remove_pointer<CanonicalDestType>::type;
+    using CanonicalDestTypeNoConst = typename std::add_pointer<
+        typename std::remove_const<NonPointer>::type>::type;
+    using CanonicalDestTypeNoVolatile = typename std::add_pointer<
+        typename std::remove_volatile<NonPointer>::type>::type;
+    using CanonicalDestTypeNoConstOrVolatile = typename std::add_pointer<
+        typename std::remove_cv<NonPointer>::type>::type;
+
+    return typeid(CanonicalDestTypeNoConst) == ContainedTypeId ||
+           typeid(CanonicalDestTypeNoVolatile) == ContainedTypeId ||
+           typeid(CanonicalDestTypeNoConstOrVolatile) == ContainedTypeId;
+  }
+
+  // Returns immutable data contained in Any.
+  // Aborts if Any doesn't contain a value of type T, or trivially
+  // convertible to/compatible with it.
+  template<typename T>
+  const T& Get() const {
+    CHECK(IsTypeCompatible<T>()) << "Requesting value of type "
+                                 << typeid(T).name()
+                                 << " from variant containing "
+                                 << GetType().name();
+    return data_buffer_.GetData<T>();
+  }
+
+  // Returns a pointer to mutable value of type T contained within Any.
+  // No data copying is made, the data pointed to is still owned by Any.
+  // If Any doesn't contain a value of type T, or trivially
+  // convertible/compatible to/with it, then it returns nullptr.
+  template<typename T>
+  T* GetPtr() {
+    if (!IsTypeCompatible<T>())
+      return nullptr;
+    return &(data_buffer_.GetData<T>());
+  }
+
+  // Returns immutable data contained in Any.
+  // If the Any doesn't contain a compatible value, the provided default
+  // |def_val| is returned instead.
+  template<typename T>
+  const T& TryGet(typename std::decay<T>::type const& def_val) const {
+    if (!IsTypeCompatible<T>())
+      return def_val;
+    return data_buffer_.GetData<T>();
+  }
+
+  // A convenience specialization of the above function where the default
+  // value of type T is returned in case the underlying Get() fails.
+  template<typename T>
+  const T& TryGet() const {
+    return TryGet<T>(typename std::decay<T>::type());
+  }
+
+
+  // Returns the type information about the contained data. For most cases,
+  // instead of using this function, you should be calling IsTypeCompatible<>().
+  const std::type_info& GetType() const;
+  // Swaps the value of this object with that of |other|.
+  void Swap(Any& other);
+  // Checks if Any is empty, that is, not containing a value of any type.
+  bool IsEmpty() const;
+  // Clears the Any and destroys any contained object. Makes it empty.
+  void Clear();
+  // Checks if Any contains a type convertible to integer.
+  // Any type that match std::is_integral<T> and std::is_enum<T> is accepted.
+  // That includes signed and unsigned char, short, int, long, etc as well as
+  // 'bool' and enumerated types.
+  // For 'integer' type, you can call GetAsInteger to do implicit type
+  // conversion to intmax_t.
+  bool IsConvertibleToInteger() const;
+  // For integral types and enums contained in the Any, get the integer value
+  // of data. This is a useful function to obtain an integer value when
+  // any can possibly have unspecified integer, such as 'short', 'unsigned long'
+  // and so on.
+  intmax_t GetAsInteger() const;
+
+ private:
+  // The data buffer for contained object.
+  internal_details::Buffer data_buffer_;
+};
+
+}  // namespace buffet
+
+namespace std {
+
+// Specialize std::swap() algorithm for buffet::Any class.
+inline void swap(buffet::Any& lhs, buffet::Any& rhs) {
+  lhs.Swap(rhs);
+}
+
+}  // namespace std
+
+#endif  // BUFFET_ANY_H_
+