Move base to DEPS

base/threading/thread_checker.h

Index: base/threading/thread_checker.h
diff --git a/base/threading/thread_checker.h b/base/threading/thread_checker.h
deleted file mode 100644
index 449247af9dd5e56626d65916bd532c120469cef6..0000000000000000000000000000000000000000
--- a/base/threading/thread_checker.h
+++ /dev/null
@@ -1,83 +0,0 @@
-// 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_THREADING_THREAD_CHECKER_H_
-#define BASE_THREADING_THREAD_CHECKER_H_
-
-// Apart from debug builds, we also enable the thread checker in
-// builds with DCHECK_ALWAYS_ON so that trybots and waterfall bots
-// with this define will get the same level of thread checking as
-// debug bots.
-//
-// Note that this does not perfectly match situations where DCHECK is
-// enabled.  For example a non-official release build may have
-// DCHECK_ALWAYS_ON undefined (and therefore ThreadChecker would be
-// disabled) but have DCHECKs enabled at runtime.
-#if (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON))
-#define ENABLE_THREAD_CHECKER 1
-#else
-#define ENABLE_THREAD_CHECKER 0
-#endif
-
-#include "base/threading/thread_checker_impl.h"
-
-namespace base {
-
-// Do nothing implementation, for use in release mode.
-//
-// Note: You should almost always use the ThreadChecker class to get the
-// right version for your build configuration.
-class ThreadCheckerDoNothing {
- public:
-  bool CalledOnValidThread() const WARN_UNUSED_RESULT {
-    return true;
-  }
-
-  void DetachFromThread() {}
-};
-
-// ThreadChecker is a helper class used to help verify that some methods of a
-// class are called from the same thread. It provides identical functionality to
-// base::NonThreadSafe, but it is meant to be held as a member variable, rather
-// than inherited from base::NonThreadSafe.
-//
-// While inheriting from base::NonThreadSafe may give a clear indication about
-// the thread-safety of a class, it may also lead to violations of the style
-// guide with regard to multiple inheritance. The choice between having a
-// ThreadChecker member and inheriting from base::NonThreadSafe should be based
-// on whether:
-//  - Derived classes need to know the thread they belong to, as opposed to
-//    having that functionality fully encapsulated in the base class.
-//  - Derived classes should be able to reassign the base class to another
-//    thread, via DetachFromThread.
-//
-// If neither of these are true, then having a ThreadChecker member and calling
-// CalledOnValidThread is the preferable solution.
-//
-// Example:
-// class MyClass {
-//  public:
-//   void Foo() {
-//     DCHECK(thread_checker_.CalledOnValidThread());
-//     ... (do stuff) ...
-//   }
-//
-//  private:
-//   ThreadChecker thread_checker_;
-// }
-//
-// In Release mode, CalledOnValidThread will always return true.
-#if ENABLE_THREAD_CHECKER
-class ThreadChecker : public ThreadCheckerImpl {
-};
-#else
-class ThreadChecker : public ThreadCheckerDoNothing {
-};
-#endif  // ENABLE_THREAD_CHECKER
-
-#undef ENABLE_THREAD_CHECKER
-
-}  // namespace base
-
-#endif  // BASE_THREADING_THREAD_CHECKER_H_