export the entire HTMLResourcePreloader class in shared_library builds

Source/core/html/parser/HTMLResourcePreloader.h

Index: Source/core/html/parser/HTMLResourcePreloader.h
diff --git a/Source/core/html/parser/HTMLResourcePreloader.h b/Source/core/html/parser/HTMLResourcePreloader.h
index ada54bee3a23dead842f09a0c8fef1df3ee6c9bb..2513560e03c92688684cfec67e76b3b957c77698 100644
--- a/Source/core/html/parser/HTMLResourcePreloader.h
+++ b/Source/core/html/parser/HTMLResourcePreloader.h
@@ -36,15 +36,15 @@
 
 namespace blink {
 
-class HTMLResourcePreloader final : public NoBaseWillBeGarbageCollected<HTMLResourcePreloader>, public ResourcePreloader {
+class CORE_EXPORT HTMLResourcePreloader final : public NoBaseWillBeGarbageCollected<HTMLResourcePreloader>, public ResourcePreloader {
     WTF_MAKE_NONCOPYABLE(HTMLResourcePreloader); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(HTMLResourcePreloader);
     friend class HTMLResourcePreloaderTest;
 public:
-    static CORE_EXPORT PassOwnPtrWillBeRawPtr<HTMLResourcePreloader> create(Document&);
+    static PassOwnPtrWillBeRawPtr<HTMLResourcePreloader> create(Document&);
     DECLARE_TRACE();
 
 protected:
-    CORE_EXPORT void preload(PassOwnPtr<PreloadRequest>, const NetworkHintsInterface&) override;
+    void preload(PassOwnPtr<PreloadRequest>, const NetworkHintsInterface&) override;
 
 private:
     explicit HTMLResourcePreloader(Document&);