Build WTF as dll in component build

Source/wtf/ArrayBuffer.h

Index: Source/wtf/ArrayBuffer.h
diff --git a/Source/wtf/ArrayBuffer.h b/Source/wtf/ArrayBuffer.h
index 535cd25a22d3bb41b5b29a8bd3b73bd810d124f2..642e3292a60781860b5b4c939b4895482a66c2a1 100644
--- a/Source/wtf/ArrayBuffer.h
+++ b/Source/wtf/ArrayBuffer.h
@@ -32,13 +32,14 @@
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
+#include "wtf/WTFExport.h"
 
 namespace WTF {
 
 class ArrayBuffer;
 class ArrayBufferView;
 
-class ArrayBuffer : public RefCounted<ArrayBuffer> {
+class WTF_EXPORT ArrayBuffer : public RefCounted<ArrayBuffer> {
 public:
     static inline PassRefPtr<ArrayBuffer> create(unsigned numElements, unsigned elementByteSize);
     static inline PassRefPtr<ArrayBuffer> create(ArrayBuffer*);