[Mac] Add the OS version check functions for 10.8.

base/mac/mac_util.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_UTIL_H_
 #define BASE_MAC_MAC_UTIL_H_
 #pragma once
 
 #include <AvailabilityMacros.h>
 #include <Carbon/Carbon.h>
@@ skipping 120 matching lines @@
 BASE_EXPORT bool IsOSLeopard();
 BASE_EXPORT bool IsOSLeopardOrEarlier();
 
 // Snow Leopard is Mac OS X 10.6, Darwin 10.
 BASE_EXPORT bool IsOSSnowLeopard();
 BASE_EXPORT bool IsOSSnowLeopardOrEarlier();
 BASE_EXPORT bool IsOSSnowLeopardOrLater();
 
 // Lion is Mac OS X 10.7, Darwin 11.
 BASE_EXPORT bool IsOSLion();
+BASE_EXPORT bool IsOSLionOrEarlier();
 BASE_EXPORT bool IsOSLionOrLater();
 
+// Mountain Lion is Mac OS X 10.8, Darwin 12.
+BASE_EXPORT bool IsOSMountainLion();
+BASE_EXPORT bool IsOSMountainLionOrLater();
+
 // This should be infrequently used. It only makes sense to use this to avoid
 // codepaths that are very likely to break on future (unreleased, untested,
 // unborn) OS releases.
-BASE_EXPORT bool IsOSLaterThanLion();
+BASE_EXPORT
+    bool IsOSDangerouslyLaterThanMountainLionForUseByCFAllocatorReplacement();

[Avi (use Gerrit), 2012/03/14 17:00:52]

Alternatively, drop this and give me IsOSMountainLionOrEarlier().

 
 // When the deployment target is set, the code produced cannot run on earlier
 // OS releases. That enables some of the IsOS* family to be implemented as
 // constant-value inline functions. The MAC_OS_X_VERSION_MIN_REQUIRED macro
 // contains the value of the deployment target.
 
 #if defined(MAC_OS_X_VERSION_10_6) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
 #define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_6
 inline bool IsOSLeopard() { return false; }
 inline bool IsOSLeopardOrEarlier() { return false; }
 inline bool IsOSSnowLeopardOrLater() { return true; }
 #endif
 
 #if defined(MAC_OS_X_VERSION_10_7) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7
 #define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_7
 inline bool IsOSSnowLeopard() { return false; }
 inline bool IsOSSnowLeopardOrEarlier() { return false; }
 inline bool IsOSLionOrLater() { return true; }
 #endif
 
 #if defined(MAC_OS_X_VERSION_10_7) && \
     MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_7
 #define BASE_MAC_MAC_UTIL_H_INLINED_GT_10_7
 inline bool IsOSLion() { return false; }
-inline bool IsOSLaterThanLion() { return true; }
+inline bool IsOSLionOrEarlier() { return false; }
+#endif
+
+#if defined(MAC_OS_X_VERSION_10_8) && \
+    MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
+#define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_8
+inline bool IsOSMountainLionOrLater() { return true; }
+#endif
+
+#if defined(MAC_OS_X_VERSION_10_8) && \
+    MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_8
+#define BASE_MAC_MAC_UTIL_H_INLINED_GT_10_8
+inline bool IsOSMountainLion() { return false; }
+inline bool IsOSDangerouslyLaterThanMountainLionForUseByCFAllocatorReplacement()
+{
+  return true;
+}
 #endif
 
 // Retrieve the system's model identifier string from the IOKit registry:
 // for example, "MacPro4,1", "MacBookPro6,1". Returns empty string upon
 // failure.
 BASE_EXPORT std::string GetModelIdentifier();
 
 // Parse a model identifier string; for example, into ("MacBookPro", 6, 1).
 // If any error occurs, none of the input pointers are touched.
 BASE_EXPORT bool ParseModelIdentifier(const std::string& ident,
                                       std::string* type,
                                       int32* major,
                                       int32* minor);
 
 }  // namespace mac
 }  // namespace base
 
 #endif  // BASE_MAC_MAC_UTIL_H_