Revert of Add support for backgrounding processes on the Mac

base/process/process.h

Index: base/process/process.h
diff --git a/base/process/process.h b/base/process/process.h
index 7fb1b69954cbe0221f06b7a615a2ab69b835e93a..808baeb1fc6ebdf7a9603b7b9b8d070b37694cdd 100644
--- a/base/process/process.h
+++ b/base/process/process.h
@@ -1,4 +1,4 @@
-// Copyright 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -107,24 +107,6 @@
   // Same as WaitForExit() but only waits for up to |timeout|.
   bool WaitForExitWithTimeout(TimeDelta timeout, int* exit_code);
 
-#if defined(OS_MACOSX)
-  // The Mac needs a Mach port in order to manipulate a process's priority,
-  // and there's no good way to get that from base given the pid. These Mac
-  // variants of the IsProcessBackgrounded and SetProcessBackgrounded API take
-  // the Mach port for this reason. See crbug.com/460102
-  //
-  // A process is backgrounded when its priority is lower than normal.
-  // Return true if the process with mach port |task_port| is backgrounded,
-  // false otherwise.
-  bool IsProcessBackgrounded(mach_port_t task_port) const;
-
-  // Set the process with the specified mach port as backgrounded. If value is
-  // true, the priority of the process will be lowered. If value is false, the
-  // priority of the process will be made "normal" - equivalent to default
-  // process priority. Returns true if the priority was changed, false
-  // otherwise.
-  bool SetProcessBackgrounded(mach_port_t task_port, bool value);
-#else
   // A process is backgrounded when it's priority is lower than normal.
   // Return true if this process is backgrounded, false otherwise.
   bool IsProcessBackgrounded() const;
@@ -134,7 +116,7 @@
   // will be made "normal" - equivalent to default process priority.
   // Returns true if the priority was changed, false otherwise.
   bool SetProcessBackgrounded(bool value);
-#endif  // defined(OS_MACOSX)
+
   // Returns an integer representing the priority of a process. The meaning
   // of this value is OS dependent.
   int GetPriority() const;