Remove support for Mac OS X Leopard (10.5)

Source/core/platform/mac/ScrollElasticityController.mm

Index: Source/core/platform/mac/ScrollElasticityController.mm
diff --git a/Source/core/platform/mac/ScrollElasticityController.mm b/Source/core/platform/mac/ScrollElasticityController.mm
index 6ef70ef6143791bc8c3b808a607fdc4e7bc36619..68eb16509b5dfdb627368cbcad83af6e466ed4cb 100644
--- a/Source/core/platform/mac/ScrollElasticityController.mm
+++ b/Source/core/platform/mac/ScrollElasticityController.mm
@@ -32,13 +32,6 @@
 
 #if ENABLE(RUBBER_BANDING)
 
-#if __MAC_OS_X_VERSION_MIN_REQUIRED == 1050
-@interface NSProcessInfo (ScrollAnimatorMacExt)
-- (NSTimeInterval)systemUptime;
-@end
-#endif
-
-#if ENABLE(RUBBER_BANDING)
 static NSTimeInterval systemUptime()
 {
     if ([[NSProcessInfo processInfo] respondsToSelector:@selector(systemUptime)])
@@ -61,8 +54,6 @@ static NSTimeInterval systemUptime()
     }
     return 0;
 }
-#endif
-
 
 namespace WebCore {