Move base to DEPS

base/mac/bind_objc_block.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.
-
-#ifndef BASE_MAC_BIND_OBJC_BLOCK_H_
-#define BASE_MAC_BIND_OBJC_BLOCK_H_
-
-#include <Block.h>
-
-#include "base/bind.h"
-#include "base/callback_forward.h"
-#include "base/mac/scoped_block.h"
-
-// BindBlock builds a callback from an Objective-C block. Example usages:
-//
-// Closure closure = BindBlock(^{DoSomething();});
-//
-// Callback<int(void)> callback = BindBlock(^{return 42;});
-//
-// Callback<void(const std::string&, const std::string&)> callback =
-//     BindBlock(^(const std::string& arg0, const std::string& arg1) {
-//         ...
-//     });
-//
-// These variadic templates will accommodate any number of arguments, however
-// the underlying templates in bind_internal.h and callback.h are limited to
-// seven total arguments, and the bound block itself is used as one of these
-// arguments, so functionally the templates are limited to binding blocks with
-// zero through six arguments.
-
-namespace base {
-
-namespace internal {
-
-// Helper function to run the block contained in the parameter.
-template<typename R, typename... Args>
-R RunBlock(base::mac::ScopedBlock<R(^)(Args...)> block, Args... args) {
-  R(^extracted_block)(Args...) = block.get();
-  return extracted_block(args...);
-}
-
-}  // namespace internal
-
-// Construct a callback from an objective-C block with up to six arguments (see
-// note above).
-template<typename R, typename... Args>
-base::Callback<R(Args...)> BindBlock(R(^block)(Args...)) {
-  return base::Bind(&base::internal::RunBlock<R, Args...>,
-                    base::mac::ScopedBlock<R(^)(Args...)>(Block_copy(block)));
-}
-
-}  // namespace base
-
-#endif  // BASE_MAC_BIND_OBJC_BLOCK_H_