share all the needed linux code with OpenBSD in chrome and content

chrome/common/multi_process_lock_win.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/common/multi_process_lock.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
 
 class MultiProcessLockWin : public MultiProcessLock {
  public:
   explicit MultiProcessLockWin(const std::string& name) : name_(name) { }
 
   virtual ~MultiProcessLockWin() {
     if (event_.Get() != NULL) {
       Unlock();
     }
   }
 
   virtual bool TryLock() {
     if (event_.Get() != NULL) {
       DLOG(ERROR) << "MultiProcessLock is already locked - " << name_;
       return true;
     }
 
-    if (name_.length() > MULTI_PROCESS_LOCK_NAME_MAX_LEN) {
+    if (name_.length() > MAX_PATH) {

[Mark Mentovai, 2011/10/31 15:47:40]

Should this be >= to leave room for a 0-terminator?

[Robert Nagy, 2011/11/07 19:23:13]

Done.

       LOG(ERROR) << "Socket name too long (" << name_.length()
-                 << " > " << MULTI_PROCESS_LOCK_NAME_MAX_LEN << ") - " << name_;
+                 << " > " << MAX_PATH << ") - " << name_;
       return false;
     }
 

[cpu_(ooo_6.6-7.5), 2011/10/31 19:26:09]

I hope this change does not mean that we are going to pass a path to this
function. See the restrictions of naming kernel objects in msdn.

[Robert Nagy, 2011/11/07 19:23:13]

MAX_PATH and MULTI_PROCESS_LOCK_NAME_MAX_LEN is just a limit that we check for.

     string16 wname = UTF8ToUTF16(name_);
     event_.Set(CreateEvent(NULL, FALSE, FALSE, wname.c_str()));
     if (event_.Get() && GetLastError() != ERROR_ALREADY_EXISTS) {
       return true;
     } else {
       event_.Set(NULL);
       return false;
     }
   }
 
   virtual void Unlock() {
     if (event_.Get() == NULL) {
       DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_;
       return;
     }
     event_.Set(NULL);
   }
 
  private:
   std::string name_;
   base::win::ScopedHandle event_;
   DISALLOW_COPY_AND_ASSIGN(MultiProcessLockWin);
 };
 
 MultiProcessLock* MultiProcessLock::Create(const std::string &name) {
   return new MultiProcessLockWin(name);
 }