Add operator!= to PlatformThreadRef

base/threading/platform_thread.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.
 
 // WARNING: You should *NOT* be using this class directly.  PlatformThread is
 // the low-level platform-specific abstraction to the OS's threading interface.
 // You should instead be using a message-loop driven Thread, see thread.h.
 
 #ifndef BASE_THREADING_PLATFORM_THREAD_H_
 #define BASE_THREADING_PLATFORM_THREAD_H_
@@ skipping 41 matching lines @@
   }
 
   explicit PlatformThreadRef(RefType id)
       : id_(id) {
   }
 
   bool operator==(PlatformThreadRef other) const {
     return id_ == other.id_;
   }
 
+  bool operator!=(PlatformThreadRef other) const { return id_ != other.id_; }
+
   bool is_null() const {
     return id_ == 0;
   }
  private:
   RefType id_;
 };
 
 // Used to operate on threads.
 class PlatformThreadHandle {
  public:
@@ skipping 147 matching lines @@
                                 ThreadPriority priority);
 #endif
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformThread);
 };
 
 }  // namespace base
 
 #endif  // BASE_THREADING_PLATFORM_THREAD_H_