Update OS version functions.

base/mac/mac_util.mm

Index: base/mac/mac_util.mm
diff --git a/base/mac/mac_util.mm b/base/mac/mac_util.mm
index 04311ecf11ec0cb09e38eb02d90a3374bab726fb..dd65eeef7728ed64b17417c16e24d46d73de7518 100644
--- a/base/mac/mac_util.mm
+++ b/base/mac/mac_util.mm
@@ -610,6 +610,7 @@ enum {
   SNOW_LEOPARD_MINOR_VERSION = 6,
   LION_MINOR_VERSION = 7,
   MOUNTAIN_LION_MINOR_VERSION = 8,
+  MAVERICKS_MINOR_VERSION = 9,
 };
 
 }  // namespace
@@ -626,12 +627,6 @@ bool IsOSLion() {
 }
 #endif
 
-#if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GT_10_7)
-bool IsOSLionOrEarlier() {
-  return MacOSXMinorVersion() <= LION_MINOR_VERSION;
-}
-#endif
-
 #if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GE_10_7)
 bool IsOSLionOrLater() {
   return MacOSXMinorVersion() >= LION_MINOR_VERSION;
@@ -650,9 +645,21 @@ bool IsOSMountainLionOrLater() {
 }
 #endif
 
-#if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GT_10_8)
-bool IsOSLaterThanMountainLion_DontCallThis() {
-  return MacOSXMinorVersion() > MOUNTAIN_LION_MINOR_VERSION;
+#if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GT_10_9)
+bool IsOSMavericks() {
+  return MacOSXMinorVersion() == MAVERICKS_MINOR_VERSION;
+}
+#endif
+
+#if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GE_10_9)
+bool IsOSMavericksOrLater() {
+  return MacOSXMinorVersion() >= MAVERICKS_MINOR_VERSION;
+}
+#endif
+
+#if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GT_10_9)
+bool IsOSLaterThanMavericks_DontCallThis() {
+  return MacOSXMinorVersion() > MAVERICKS_MINOR_VERSION;
 }
 #endif