Use a non-deprecated method to get a string from an OSStatus error .

base/mac/mac_logging.h

 // Copyright (c) 2012 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_MAC_MAC_LOGGING_H_
 #define BASE_MAC_MAC_LOGGING_H_
 
 #include "base/base_export.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 11 matching lines @@
 // global (or thread-local) OSStatus or OSErr value, the specific error must
 // be supplied as an argument to the OSSTATUS_LOG macro. The message logged
 // will contain the symbolic constant name corresponding to the status value,
 // along with the value itself.
 //
 // OSErr is just an older 16-bit form of the newer 32-bit OSStatus. Despite
 // the name, OSSTATUS_LOG can be used equally well for OSStatus and OSErr.
 
 namespace logging {
 
+// Returns a UTF8 description from an OS X Status error.
+BASE_EXPORT std::string DescriptionFromOSStatus(OSStatus err);
+
 class BASE_EXPORT OSStatusLogMessage : public logging::LogMessage {
  public:
   OSStatusLogMessage(const char* file_path,
                      int line,
                      LogSeverity severity,
                      OSStatus status);
   ~OSStatusLogMessage();
 
  private:
   OSStatus status_;
@@ skipping 44 matching lines @@
 #define OSSTATUS_DVLOG_IF(verbose_level, condition, status) \
     LAZY_STREAM(OSSTATUS_VLOG_STREAM(verbose_level, status), \
                 MAC_DVLOG_IS_ON(verbose_level) && (condition))
 
 #define OSSTATUS_DCHECK(condition, status)        \
   LAZY_STREAM(OSSTATUS_LOG_STREAM(FATAL, status), \
               DCHECK_IS_ON() && !(condition))     \
       << "Check failed: " #condition << ". "
 
 #endif  // BASE_MAC_MAC_LOGGING_H_