WebKit side of merge from r41149 to r41181.

JavaScriptCore/API/JSBasePrivate.h

 /*
  * Copyright (C) 2008 Apple Computer, 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 25 matching lines @@
 /*!
 @function
 @abstract Reports an object's non-GC memory payload to the garbage collector.
 @param ctx The execution context to use.
 @param size The payload's size, in bytes.
 @discussion Use this function to notify the garbage collector that a GC object
 owns a large non-GC memory region. Calling this function will encourage the
 garbage collector to collect soon, hoping to reclaim that large non-GC memory
 region.
 */
-JS_EXPORT void JSReportExtraMemoryCost(JSContextRef ctx, size_t size) AVAILABLE_AFTER_WEBKIT_VERSION_3_1;
+JS_EXPORT void JSReportExtraMemoryCost(JSContextRef ctx, size_t size) AVAILABLE_IN_WEBKIT_VERSION_4_0;
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* JSBasePrivate_h */