Remove unused shouldUseAddressHint.

Source/wtf/PageAllocator.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 40 matching lines @@
 #elif OS(WIN)
 
 #include <windows.h>
 
 #else
 #error Unknown OS
 #endif // OS(POSIX)
 
 namespace WTF {
 
-#if OS(WIN)
-
-static bool shouldUseAddressHint()
-{
-#if CPU(32BIT)
-    // When running 32-bit processes under 32-bit Windows, the userspace is
-    // limited to 2 GB, and we risk fragmenting it badly if we allow further
-    // randomization via our address hint. On the other hand, if the process
-    // is running under WOW64, then it has at least 3 GB available (and likely
-    // 4 GB depending upon the OS version), and we want use the additional
-    // randomness.
-    // TODO(tsepez): presently disabled due to IsWow64Process() compatibility.
-    return true;
-#else // CPU(32BIT)
-    return true;
-#endif // CPU(32BIT)
-}
-
-#endif // OS(WIN)
-
 // This simple internal function wraps the OS-specific page allocation call so
 // that it behaves consistently: the address is a hint and if it cannot be used,
 // the allocation will be placed elsewhere.
 static void* systemAllocPages(void* addr, size_t len, PageAccessibilityConfiguration pageAccessibility)
 {
     ASSERT(!(len & kPageAllocationGranularityOffsetMask));
     ASSERT(!(reinterpret_cast<uintptr_t>(addr) & kPageAllocationGranularityOffsetMask));
-    void* ret = 0;
+    void* ret;
 #if OS(WIN)
     int accessFlag = pageAccessibility == PageAccessible ? PAGE_READWRITE : PAGE_NOACCESS;
-    if (shouldUseAddressHint())
-        ret = VirtualAlloc(addr, len, MEM_RESERVE | MEM_COMMIT, accessFlag);
+    ret = VirtualAlloc(addr, len, MEM_RESERVE | MEM_COMMIT, accessFlag);
     if (!ret)
         ret = VirtualAlloc(0, len, MEM_RESERVE | MEM_COMMIT, accessFlag);
 #else
     int accessFlag = pageAccessibility == PageAccessible ? (PROT_READ | PROT_WRITE) : PROT_NONE;
     ret = mmap(addr, len, accessFlag, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
     if (ret == MAP_FAILED)
         ret = 0;
 #endif
     return ret;
 }
@@ skipping 134 matching lines @@
     ASSERT(!(len & kSystemPageOffsetMask));
 #if OS(POSIX)
     (void) addr;
 #else
     RELEASE_ASSERT(setSystemPagesAccessible(addr, len));
 #endif
 }
 
 } // namespace WTF