mac: Update knowledge of CFAllocator internals for 10.12

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_
 
 #include <AvailabilityMacros.h>
 #include <Carbon/Carbon.h>
 #include <stdint.h>
@@ skipping 95 matching lines @@
 
 // Remove the quarantine xattr from the given file. Returns false if there was
 // an error, or true otherwise.
 BASE_EXPORT bool RemoveQuarantineAttribute(const FilePath& file_path);
 
 // Run-time OS version checks. Use these instead of
 // base::SysInfo::OperatingSystemVersionNumbers. Prefer the "OrEarlier" and
 // "OrLater" variants to those that check for a specific version, unless you
 // know for sure that you need to check for a specific version.
 
-// Mavericks is Mac OS X 10.9, Darwin 13.
+// Mavericks is OS X 10.9, Darwin 13.
 BASE_EXPORT bool IsOSMavericks();
 BASE_EXPORT bool IsOSMavericksOrLater();
 
-// Yosemite is Mac OS X 10.10, Darwin 14.
+// Yosemite is OS X 10.10, Darwin 14.
 BASE_EXPORT bool IsOSYosemite();
 BASE_EXPORT bool IsOSYosemiteOrEarlier();
 BASE_EXPORT bool IsOSYosemiteOrLater();
 
-// El Capitan is Mac OS X 10.11, Darwin 15.
+// El Capitan is OS X 10.11, Darwin 15.
 BASE_EXPORT bool IsOSElCapitan();
+BASE_EXPORT bool IsOSElCapitanOrEarlier();
 BASE_EXPORT bool IsOSElCapitanOrLater();
 
+// Sierra is macOS 10.12, Darwin 16.
+BASE_EXPORT bool IsOSSierra();
+BASE_EXPORT bool IsOSSierraOrLater();
+
 // 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, or to log when the OS is newer than any known version.
-BASE_EXPORT bool IsOSLaterThanElCapitan_DontCallThis();
+BASE_EXPORT bool IsOSLaterThanSierra_DontCallThis();
 
 // Inline functions that are redundant due to version ranges being mutually-
 // exclusive.
 inline bool IsOSYosemiteOrEarlier() { return !IsOSElCapitanOrLater(); }
+inline bool IsOSElCapitanOrEarlier() { return !IsOSSierraOrLater(); }
 
 // 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_9) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_9
 #define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_9
 inline bool IsOSMavericksOrLater() { return true; }
@@ skipping 20 matching lines @@
 #if defined(MAC_OS_X_VERSION_10_11) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_11
 #define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_11
 inline bool IsOSElCapitanOrLater() { return true; }
 #endif
 
 #if defined(MAC_OS_X_VERSION_10_11) && \
     MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_11
 #define BASE_MAC_MAC_UTIL_H_INLINED_GT_10_11
 inline bool IsOSElCapitan() { return false; }
-inline bool IsOSLaterThanElCapitan_DontCallThis() { return true; }
+#endif
+
+#if defined(MAC_OS_X_VERSION_10_12) && \
+    MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12
+#define BASE_MAC_MAC_UTIL_H_INLINED_GE_10_12
+inline bool IsOSSierraOrLater() { return true; }
+#endif
+
+#if defined(MAC_OS_X_VERSION_10_12) && \
+    MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_12
+#define BASE_MAC_MAC_UTIL_H_INLINED_GT_10_12
+inline bool IsOSSierra() { return false; }
+inline bool IsOSLaterThanSierra_DontCallThis() { 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_t* major,
                                       int32_t* minor);
 
 }  // namespace mac
 }  // namespace base
 
 #endif  // BASE_MAC_MAC_UTIL_H_