Remove all the OS X 10.6 SDK forward declarations.

chrome/browser/mac/security_wrappers.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 CHROME_BROWSER_MAC_SECURITY_WRAPPERS_H_
 #define CHROME_BROWSER_MAC_SECURITY_WRAPPERS_H_
 
 #include <Security/Security.h>
+#include <Security/SecRequirement.h>
 
 #include "base/basictypes.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_ptr.h"
 
-#if defined(MAC_OS_X_VERSION_10_6) && \
-    MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
-
-#include <Security/SecRequirement.h>
-
-#else
-
-typedef struct __SecRequirement* SecRequirementRef;
-typedef uint32_t SecCSFlags;
-
-enum {
-  kSecCSDefaultFlags = 0
-};
-
-#endif
-
 namespace chrome {
 namespace browser {
 namespace mac {
 
 // Wraps SecKeychainSetUserInteractionAllowed, restoring the previous setting
 // on destruction.
 class ScopedSecKeychainSetUserInteractionAllowed {
  public:
   explicit ScopedSecKeychainSetUserInteractionAllowed(Boolean allowed);
   ~ScopedSecKeychainSetUserInteractionAllowed();
@@ skipping 202 matching lines @@
 SecKeychainItemRef CrSKeychainItemCreateFromContent(
     const CrSKeychainItemAttributesAndData& attributes_and_data,
     SecKeychainRef keychain,
     SecAccessRef access);
 
 }  // namespace mac
 }  // namespace browser
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MAC_SECURITY_WRAPPERS_H_