Remove all //blimp code.

blimp/common/mandatory_callback.h

-// Copyright 2016 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 BLIMP_COMMON_MANDATORY_CALLBACK_H_
-#define BLIMP_COMMON_MANDATORY_CALLBACK_H_
-
-#include <utility>
-
-#include "base/callback.h"
-#include "base/logging.h"
-
-namespace blimp {
-
-// Adds a leak-detection wrapper to base::Callback objects.
-//
-// When a wrapped Callback is destroyed without being Run first, the checker
-// will DCHECK-crash the program with a stack trace, so that developers can
-// pinpoint the site of the leak.
-//
-// The MandatoryCallback may be passed using std::move; leak detection occurs
-// when the MandatoryCallback is finally destroyed.
-//
-// Usage:
-//   void DoStuff(int d) { ... }
-//   ...
-//   base::Closure my_callback = base::Bind(&DoStuff);
-//   MandatoryCallback<void(int)> leak_checked_callback =
-//       CreateMandatoryCallback(my_callback);
-//
-// Note that MandatoryCallbacks lack some functionality from
-// base::CallbackInternal.
-// * They can only be invoked once.
-// * They do not support parameter currying with additional Bind() calls.[1]
-// * They cannot be Reset().
-//
-// [1] Mandatory invocation support would need to be plumbed in to
-//     base::CallbackInternal and base::Bind for this to work,
-//     which is feasible but low-priority for the owners of the callback
-//     libraries.
-
-template <typename SignatureType>
-class MandatoryCallback;
-
-// Template specialization for extracting the function signature data types.
-template <typename ReturnType, typename... ArgTypes>
-class MandatoryCallback<ReturnType(ArgTypes...)> {
- public:
-  using CallbackType = base::Callback<ReturnType(ArgTypes...)>;
-
-  explicit MandatoryCallback(const CallbackType& callback) : cb_(callback) {
-    DCHECK(!cb_.is_null());
-  }
-
-  MandatoryCallback(MandatoryCallback&& other) {
-    cb_ = other.cb_;
-    other.cb_.Reset();
-
-#if DCHECK_IS_ON()
-    was_run_ = other.was_run_;
-    other.was_run_ = false;
-#endif
-  }
-
-  ~MandatoryCallback() {
-#if DCHECK_IS_ON()
-    DCHECK(cb_.is_null() || was_run_);
-#endif
-  }
-
-  // This a overload that handles the case where there are no arguments provided
-  template <typename...>
-  ReturnType Run() {
-    DCHECK(cb_);  // Can't be run following std::move.
-
-#if DCHECK_IS_ON()
-    DCHECK(!was_run_);
-    was_run_ = true;
-#endif
-
-    cb_.Run();
-  }
-
-  template <typename... RunArgs>
-  ReturnType Run(RunArgs... args) {
-    DCHECK(cb_);  // Can't be run following std::move.
-
-#if DCHECK_IS_ON()
-    DCHECK(!was_run_);
-    was_run_ = true;
-#endif
-
-    cb_.Run(std::forward<RunArgs...>(args...));
-  }
-
- private:
-  // Nulled after being moved.
-  CallbackType cb_;
-
-#if DCHECK_IS_ON()
-  bool was_run_ = false;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(MandatoryCallback);
-};
-
-// Creates a leak-checking proxy callback around |callback|.
-template <typename SignatureType>
-MandatoryCallback<SignatureType> CreateMandatoryCallback(
-    const base::Callback<SignatureType>& callback) {
-  return MandatoryCallback<SignatureType>(callback);
-}
-
-using MandatoryClosure = MandatoryCallback<void()>;
-
-}  // namespace blimp
-
-#endif  // BLIMP_COMMON_MANDATORY_CALLBACK_H_