Speculatively reverting 166585 to see if it fixes issue 160300 - 6% startup regression on Mac 10.6

base/mac/mac_util_unittest.mm

Index: base/mac/mac_util_unittest.mm
===================================================================
--- base/mac/mac_util_unittest.mm	(revision 170797)
+++ base/mac/mac_util_unittest.mm	(working copy)
@@ -158,7 +158,8 @@
       EXPECT_FALSE(IsOSLionOrLater());
       EXPECT_FALSE(IsOSMountainLion());
       EXPECT_FALSE(IsOSMountainLionOrLater());
-      EXPECT_FALSE(IsOSLaterThanMountainLion_DontCallThis());
+      EXPECT_FALSE(
+          IsOSDangerouslyLaterThanMountainLionForUseByCFAllocatorReplacement());
     } else if (minor == 7) {
       EXPECT_FALSE(IsOSSnowLeopard());
       EXPECT_TRUE(IsOSLion());
@@ -166,7 +167,8 @@
       EXPECT_TRUE(IsOSLionOrLater());
       EXPECT_FALSE(IsOSMountainLion());
       EXPECT_FALSE(IsOSMountainLionOrLater());
-      EXPECT_FALSE(IsOSLaterThanMountainLion_DontCallThis());
+      EXPECT_FALSE(
+          IsOSDangerouslyLaterThanMountainLionForUseByCFAllocatorReplacement());
     } else if (minor == 8) {
       EXPECT_FALSE(IsOSSnowLeopard());
       EXPECT_FALSE(IsOSLion());
@@ -174,7 +176,8 @@
       EXPECT_TRUE(IsOSLionOrLater());
       EXPECT_TRUE(IsOSMountainLion());
       EXPECT_TRUE(IsOSMountainLionOrLater());
-      EXPECT_FALSE(IsOSLaterThanMountainLion_DontCallThis());
+      EXPECT_FALSE(
+          IsOSDangerouslyLaterThanMountainLionForUseByCFAllocatorReplacement());
     } else {
       // Not five, six, seven, or eight. Ah, ah, ah.
       EXPECT_TRUE(false);