Remove support for Mac OS X Leopard (10.5)

Source/core/platform/mac/ScrollElasticityController.mm

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #include "config.h"
 #include "core/platform/mac/ScrollElasticityController.h"
 
 #include <sys/sysctl.h>
 #include <sys/time.h>
 #include "core/platform/PlatformWheelEvent.h"
 
 #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)])
         return [[NSProcessInfo processInfo] systemUptime];
 
     // Get how long system has been up. Found by looking getting "boottime" from the kernel.
     static struct timeval boottime = {0, 0};
     if (!boottime.tv_sec) {
         int mib[2] = {CTL_KERN, KERN_BOOTTIME};
         size_t size = sizeof(boottime);
         if (-1 == sysctl(mib, 2, &boottime, &size, 0, 0))
             boottime.tv_sec = 0;
     }
     struct timeval now;
     if (boottime.tv_sec && -1 != gettimeofday(&now, 0)) {
         struct timeval uptime;
         timersub(&now, &boottime, &uptime);
         NSTimeInterval result = uptime.tv_sec + (uptime.tv_usec / 1E+6);
         return result;
     }
     return 0;
 }
-#endif
-
 
 namespace WebCore {
 
 static const float scrollVelocityZeroingTimeout = 0.10f;
 static const float rubberbandDirectionLockStretchRatio = 1;
 static const float rubberbandMinimumRequiredDeltaBeforeStretch = 10;
 
 static const float rubberbandStiffness = 20;
 static const float rubberbandAmplitude = 0.31f;
 static const float rubberbandPeriod = 1.6f;
@@ skipping 337 matching lines @@
         return m_client->shouldRubberBandInDirection(ScrollLeft);
     if (wheelEvent.deltaX() < 0)
         return m_client->shouldRubberBandInDirection(ScrollRight);
 
     return true;
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(RUBBER_BANDING)