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

chrome/common/multi_process_lock_mac.cc

 // 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.
 
 #include "chrome/common/multi_process_lock.h"
 
 #include "base/logging.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/sys_string_conversions.h"
 
 class MultiProcessLockMac : public MultiProcessLock {
  public:
   explicit MultiProcessLockMac(const std::string& name) : name_(name) { }
 
   virtual ~MultiProcessLockMac() {
     if (port_ != NULL) {
       Unlock();
     }
   }
 
   virtual bool TryLock() {
     if (port_ != NULL) {
       DLOG(ERROR) << "MultiProcessLock is already locked - " << name_;
       return true;
     }
 
-    if (name_.length() > MULTI_PROCESS_LOCK_NAME_MAX_LEN) {
+    if (name_.length() >= BOOTSTRAP_MAX_NAME_LEN) {
       LOG(ERROR) << "Socket name too long (" << name_.length()
-                 << " > " << MULTI_PROCESS_LOCK_NAME_MAX_LEN << ") - " << name_;
+                 << " >= " << BOOTSTRAP_MAX_NAME_LEN << ") - " << name_;
       return false;
     }
 
     CFStringRef cf_name(base::SysUTF8ToCFStringRef(name_));
     base::mac::ScopedCFTypeRef<CFStringRef> scoped_cf_name(cf_name);
     port_.reset(CFMessagePortCreateLocal(NULL, cf_name, NULL, NULL, NULL));
     return port_ != NULL;
   }
 
   virtual void Unlock() {
     if (port_ == NULL) {
       DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_;
       return;
     }
     port_.reset();
   }
 
  private:
   std::string name_;
   base::mac::ScopedCFTypeRef<CFMessagePortRef> port_;
   DISALLOW_COPY_AND_ASSIGN(MultiProcessLockMac);
 };
 
 MultiProcessLock* MultiProcessLock::Create(const std::string &name) {
   return new MultiProcessLockMac(name);
 }