Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/interface_handle.h

-// Copyright 2015 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 MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_
-
-#include <cstddef>
-
-#include "mojo/public/cpp/system/macros.h"
-#include "mojo/public/cpp/system/message_pipe.h"
-
-namespace mojo {
-
-template <typename Interface>
-class InterfacePtr;
-
-template <typename Interface>
-class SynchronousInterfacePtr;
-
-// InterfaceHandle stores necessary information to communicate with a remote
-// interface implementation, which could be used to construct an InterfacePtr.
-template <typename Interface>
-class InterfaceHandle {
- public:
-  InterfaceHandle() : version_(0u) {}
-  InterfaceHandle(std::nullptr_t) : version_(0u) {}
-
-  InterfaceHandle(ScopedMessagePipeHandle handle, uint32_t version)
-      : handle_(handle.Pass()), version_(version) {}
-
-  InterfaceHandle(InterfaceHandle&& other)
-      : handle_(other.handle_.Pass()), version_(other.version_) {
-    other.version_ = 0u;
-  }
-
-  // Making this constructor templated ensures that it is not type-instantiated
-  // unless it is used, making the InterfacePtr<->InterfaceHandle codependency
-  // less fragile.
-  template <typename SameInterfaceAsAbove = Interface>
-  InterfaceHandle(InterfacePtr<SameInterfaceAsAbove>&& ptr) {
-    *this = ptr.PassInterfaceHandle();
-  }
-
-  // Making this constructor templated ensures that it is not type-instantiated
-  // unless it is used, making the SynchronousInterfacePtr<->InterfaceHandle
-  // codependency less fragile.
-  template <typename SameInterfaceAsAbove = Interface>
-  InterfaceHandle(SynchronousInterfacePtr<SameInterfaceAsAbove>&& ptr) {
-    *this = ptr.PassInterfaceHandle();
-  }
-
-  ~InterfaceHandle() {}
-
-  InterfaceHandle& operator=(InterfaceHandle&& other) {
-    if (this != &other) {
-      handle_ = other.handle_.Pass();
-      version_ = other.version_;
-      other.version_ = 0u;
-    }
-
-    return *this;
-  }
-
-  // Tests as true if we have a valid handle.
-  explicit operator bool() const { return is_valid(); }
-  bool is_valid() const { return handle_.is_valid(); }
-
-  ScopedMessagePipeHandle PassHandle() { return handle_.Pass(); }
-  const ScopedMessagePipeHandle& handle() const { return handle_; }
-  void set_handle(ScopedMessagePipeHandle handle) { handle_ = handle.Pass(); }
-
-  uint32_t version() const { return version_; }
-  void set_version(uint32_t version) { version_ = version; }
-
- private:
-  ScopedMessagePipeHandle handle_;
-  uint32_t version_;
-
-  MOJO_MOVE_ONLY_TYPE(InterfaceHandle);
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_