mac: Remove IsOSSnowLeopard().

base/mac/mac_util.h

Index: base/mac/mac_util.h
diff --git a/base/mac/mac_util.h b/base/mac/mac_util.h
index c0d1b2fb3d2bef49d9780d224af239a6a3d7b4a6..7fd0cded3620bdf9ee29a59fa300697abf9135ae 100644
--- a/base/mac/mac_util.h
+++ b/base/mac/mac_util.h
@@ -119,9 +119,6 @@ BASE_EXPORT bool RemoveQuarantineAttribute(const FilePath& file_path);
 // "OrLater" variants to those that check for a specific version, unless you
 // know for sure that you need to check for a specific version.
 
-// Snow Leopard is Mac OS X 10.6, Darwin 10.
-BASE_EXPORT bool IsOSSnowLeopard();
-
 // Lion is Mac OS X 10.7, Darwin 11.
 BASE_EXPORT bool IsOSLion();
 BASE_EXPORT bool IsOSLionOrEarlier();
@@ -166,7 +163,6 @@ inline bool IsOSYosemiteOrEarlier() { return !IsOSElCapitanOrLater(); }
 #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 IsOSLionOrLater() { return true; }
 #endif