Deleted OS_WIN and all Windows specific files from base.

base/process/process_handle.h

 // Copyright (c) 2013 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_PROCESS_PROCESS_HANDLE_H_
 #define BASE_PROCESS_PROCESS_HANDLE_H_
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "build/build_config.h"
 
 #include <sys/types.h>
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
 
 namespace base {
 
 // ProcessHandle is a platform specific type which represents the underlying OS
 // handle to a process.
 // ProcessId is a number which identifies the process in the OS.
-#if defined(OS_WIN)
-typedef HANDLE ProcessHandle;
-typedef DWORD ProcessId;
-typedef HANDLE UserTokenHandle;
-const ProcessHandle kNullProcessHandle = NULL;
-const ProcessId kNullProcessId = 0;
-#elif defined(OS_POSIX)
+#if defined(OS_POSIX)
 // On POSIX, our ProcessHandle will just be the PID.
 typedef pid_t ProcessHandle;
 typedef pid_t ProcessId;
 const ProcessHandle kNullProcessHandle = 0;
 const ProcessId kNullProcessId = 0;
-#endif  // defined(OS_WIN)
+#endif  // defined(OS_POSIX)
 
 // Returns the id of the current process.
 BASE_EXPORT ProcessId GetCurrentProcId();
 
 // Returns the ProcessHandle of the current process.
 BASE_EXPORT ProcessHandle GetCurrentProcessHandle();
 
 // Returns the unique ID for the specified process. This is functionally the
 // same as Windows' GetProcessId(), but works on versions of Windows before
 // Win XP SP1 as well.
 // DEPRECATED. New code should be using Process::Pid() instead.
 BASE_EXPORT ProcessId GetProcId(ProcessHandle process);
 
 #if defined(OS_POSIX)
 // Returns the path to the executable of the given process.
 BASE_EXPORT FilePath GetProcessExecutablePath(ProcessHandle process);
 
 // Returns the ID for the parent of the given process.
 BASE_EXPORT ProcessId GetParentProcessId(ProcessHandle process);
 #endif
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_PROCESS_HANDLE_H_