diff --git a/webrtc/system_wrappers/interface/thread_wrapper.h b/webrtc/system_wrappers/interface/thread_wrapper.h
index cda4827b01..edfc4bf52b 100644
--- a/webrtc/system_wrappers/interface/thread_wrapper.h
+++ b/webrtc/system_wrappers/interface/thread_wrapper.h
@@ -88,11 +88,6 @@ public:
     // Multiple tries to Stop are allowed (e.g. to wait longer than 2 seconds).
     // It's ok to call Stop() even if the spawned thread has been reclaimed.
     virtual bool Stop() = 0;
-
-    // Stops the spawned thread dead in its tracks. Will likely result in a
-    // corrupt state. There should be an extremely good reason for even looking
-    // at this function. Can cause many problems deadlock being one of them.
-    virtual bool Shutdown() {return false;}
 };
 } // namespace webrtc
 
diff --git a/webrtc/system_wrappers/source/thread_posix.cc b/webrtc/system_wrappers/source/thread_posix.cc
index 35c9f8171a..dd78a70efe 100644
--- a/webrtc/system_wrappers/source/thread_posix.cc
+++ b/webrtc/system_wrappers/source/thread_posix.cc
@@ -306,20 +306,6 @@ void ThreadPosix::SetNotAlive()
     _alive = false;
 }
 
-bool ThreadPosix::Shutdown()
-{
-#if !defined(WEBRTC_ANDROID)
-    if (_thread && (0 != pthread_cancel(_thread)))
-    {
-        return false;
-    }
-
-    return true;
-#else
-    return false;
-#endif
-}
-
 bool ThreadPosix::Stop()
 {
     bool dead = false;
diff --git a/webrtc/system_wrappers/source/thread_posix.h b/webrtc/system_wrappers/source/thread_posix.h
index 8fcdf10ced..f83e2f9b02 100644
--- a/webrtc/system_wrappers/source/thread_posix.h
+++ b/webrtc/system_wrappers/source/thread_posix.h
@@ -38,7 +38,6 @@ public:
     virtual bool SetAffinity(const int* processorNumbers,
                              unsigned int amountOfProcessors);
     virtual bool Stop();
-    virtual bool Shutdown();
 
     void Run();
 
diff --git a/webrtc/system_wrappers/source/thread_win.cc b/webrtc/system_wrappers/source/thread_win.cc
index f458e0e9c1..8d43764329 100644
--- a/webrtc/system_wrappers/source/thread_win.cc
+++ b/webrtc/system_wrappers/source/thread_win.cc
@@ -133,20 +133,6 @@ void ThreadWindows::SetNotAlive()
     _alive = false;
 }
 
-bool ThreadWindows::Shutdown()
-{
-    DWORD exitCode = 0;
-    BOOL ret = TRUE;
-    if (_thread)
-    {
-        ret = TerminateThread(_thread, exitCode);
-        _alive = false;
-        _dead = true;
-        _thread = NULL;
-    }
-    return ret == TRUE;
-}
-
 bool ThreadWindows::Stop()
 {
     _critsectStop->Enter();
diff --git a/webrtc/system_wrappers/source/thread_win.h b/webrtc/system_wrappers/source/thread_win.h
index 4fd7523ec9..e73c8fd086 100644
--- a/webrtc/system_wrappers/source/thread_win.h
+++ b/webrtc/system_wrappers/source/thread_win.h
@@ -34,8 +34,6 @@ public:
 
     static unsigned int WINAPI StartThread(LPVOID lpParameter);
 
-    virtual bool Shutdown();
-
 protected:
     virtual void Run();