Oilpan: Improve address space randomization for the Oilpan heap.

Source/wtf/AddressSpaceRandomization.h

Index: Source/wtf/AddressSpaceRandomization.h
diff --git a/Source/wtf/text/StringStatics.h b/Source/wtf/AddressSpaceRandomization.h
similarity index 85%
copy from Source/wtf/text/StringStatics.h
copy to Source/wtf/AddressSpaceRandomization.h
index b241894681dce487446f70bdcc2bfe01be1f55bc..3bbecc9ed6db9665bf908a6539735757c7a83fa0 100644
--- a/Source/wtf/text/StringStatics.h
+++ b/Source/wtf/AddressSpaceRandomization.h
@@ -28,20 +28,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#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();
 
 }