Oilpan: Improve address space randomization for the Oilpan heap.

Source/wtf/AddressSpaceRandomization.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.

[Tom Sepez, 2014/06/26 17:06:54]

nit: no (C), year 2014.

[Mads Ager (chromium), 2014/06/27 06:16:36]

Thanks. Changed to the new style copyright notice from
http://www.chromium.org/developers/coding-style.

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-#ifndef StringStatics_h
-#define StringStatics_h
+#ifndef WTF_AddressSpaceRandomization_h
+#define WTF_AddressSpaceRandomization_h
 
 #include "wtf/WTFExport.h"
 
 namespace WTF {
 
-class StringStatics {
-public:
-    WTF_EXPORT static void init();
-
-private:
-    StringStatics();
-};
+// Calculates a random preferred mapping address. In calculating an
+// address, we balance good ASLR against not fragmenting the address
+// space too badly.
+WTF_EXPORT void* getRandomPageBase();
 
 }
 
 #endif