Remove WTF_USE_SYSTEM_MALLOC

Source/wtf/FastMalloc.cpp

 // Copyright (c) 2005, 2007, Google Inc.
 // All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2011 Apple 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.
@@ skipping 13 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "config.h"
 #include "wtf/FastMalloc.h"
 
+#include "wtf/PartitionAlloc.h"
+#include "wtf/SpinLock.h"
 #include <string.h>
 
 namespace WTF {
 
+static PartitionAllocatorGeneric gPartition;
+static int gLock = 0;
+static bool gInitialized = false;
+
 void* fastZeroedMalloc(size_t n)
 {
     void* result = fastMalloc(n);
     memset(result, 0, n);
     return result;
 }
 
 char* fastStrDup(const char* src)
 {
     size_t len = strlen(src) + 1;
     char* dup = static_cast<char*>(fastMalloc(len));
     memcpy(dup, src, len);
     return dup;
 }
 
 FastMallocStatistics fastMallocStatistics()
 {
     FastMallocStatistics statistics = { 0, 0, 0 };
     return statistics;
 }
 
-} // namespace WTF
-
-#if USE(SYSTEM_MALLOC)
-
-#include "wtf/Assertions.h"
-
-#include <stdlib.h>
-
-namespace WTF {
-
-void fastMallocShutdown()
-{
-}
-
-void* fastMalloc(size_t n)
-{
-    void* result = malloc(n);
-    ASSERT(result);  // We expect tcmalloc underneath, which would crash instead of getting here.
-
-    return result;
-}
-
-void fastFree(void* p)
-{
-    free(p);
-}
-
-void* fastRealloc(void* p, size_t n)
-{
-    void* result = realloc(p, n);
-    ASSERT(result);  // We expect tcmalloc underneath, which would crash instead of getting here.
-
-    return result;
-}
-
-} // namespace WTF
-
-#else // USE(SYSTEM_MALLOC)
-
-#include "wtf/PartitionAlloc.h"
-#include "wtf/SpinLock.h"
-
-namespace WTF {
-
-static PartitionAllocatorGeneric gPartition;
-static int gLock = 0;
-static bool gInitialized = false;
-
 void fastMallocShutdown()
 {
     gPartition.shutdown();
 }
 
 void* fastMalloc(size_t n)
 {
     if (UNLIKELY(!gInitialized)) {
         spinLockLock(&gLock);
         if (!gInitialized) {
             gInitialized = true;
             gPartition.init();
         }
         spinLockUnlock(&gLock);
     }
     return partitionAllocGeneric(gPartition.root(), n);
 }
 
 void fastFree(void* p)
 {
     partitionFreeGeneric(gPartition.root(), p);
 }
 
 void* fastRealloc(void* p, size_t n)
 {
     return partitionReallocGeneric(gPartition.root(), p, n);
 }
 
 } // namespace WTF
-
-#endif // USE(SYSTEM_MALLOC)