Make HAVE_MADV_FREE, HAVE_MADV_FREE_REUSE and HAVE_VIRTUALALLOC local macros as it only used in wtf…

Source/wtf/TCSystemAlloc.h

Index: Source/wtf/TCSystemAlloc.h
diff --git a/Source/wtf/TCSystemAlloc.h b/Source/wtf/TCSystemAlloc.h
index 247ea7cfba40e062d9f3d27608bd7f8ae10ee94b..8a5080793c0ff82c8224cd082b9c2549a6cc0871 100644
--- a/Source/wtf/TCSystemAlloc.h
+++ b/Source/wtf/TCSystemAlloc.h
@@ -64,6 +64,15 @@ extern void TCMalloc_SystemRelease(void* start, size_t length);
 
 extern void TCMalloc_SystemCommit(void* start, size_t length);
 
+#if OS(DARWIN)
+#define HAVE_MADV_FREE 1
+#define HAVE_MADV_FREE_REUSE 1
+#endif
+
+#if OS(WINDOWS)
+#define HAVE_VIRTUALALLOC 1

[abarth-chromium, 2013/08/12 20:32:17]

We don't use TC* on Window.  You can probably remove this #define and all code
behind it.

+#endif
+
 #if !HAVE(MADV_FREE_REUSE) && !HAVE(MADV_DONTNEED) && !HAVE(MMAP) && !HAVE(VIRTUALALLOC)
 inline void TCMalloc_SystemRelease(void*, size_t) { }
 #endif