Remove unnecessary NSString conversions in sandbox_mac.mm.

content/common/sandbox_mac.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 CONTENT_COMMON_SANDBOX_MAC_H_
 #define CONTENT_COMMON_SANDBOX_MAC_H_
 
 #include <map>
 #include <string>
 
 #include "base/containers/hash_tables.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/public/common/sandbox_type.h"
 
 namespace base {
 class FilePath;
 }
 
-#if __OBJC__
-@class NSArray;
-@class NSString;
-#else
-class NSArray;
-class NSString;
-#endif
-
 namespace content {
 
 // This class wraps the C-style sandbox APIs in a class to ensure proper
 // initialization and cleanup.
 class CONTENT_EXPORT SandboxCompiler {
  public:
   explicit SandboxCompiler(const std::string& profile_str);
 
   ~SandboxCompiler();
 
@@ skipping 73 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(MacDirAccessSandboxTest, StringEscape);
   FRIEND_TEST_ALL_PREFIXES(MacDirAccessSandboxTest, RegexEscape);
   FRIEND_TEST_ALL_PREFIXES(MacDirAccessSandboxTest, SandboxAccess);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Sandbox);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SANDBOX_MAC_H_