blink: Cleanup class/struct forward declarations

third_party/WebKit/public/web/WebLabelElement.h

 /*
  * Copyright (C) 2010 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 15 matching lines @@
  * 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.
  */
 
 #ifndef WebLabelElement_h
 #define WebLabelElement_h
 
 #include "WebElement.h"
 
-#if BLINK_IMPLEMENTATION
-namespace WTF {
-template <typename T>
-class PassRefPtr;
-}
-#endif
-
 namespace blink {
 
 class HTMLLabelElement;
 
 // Provides readonly access to some properties of a DOM label element node.
 class WebLabelElement final : public WebElement {
  public:
   WebLabelElement() : WebElement() {}
   WebLabelElement(const WebLabelElement& element) : WebElement(element) {}
 
@@ skipping 11 matching lines @@
   WebLabelElement& operator=(HTMLLabelElement*);
   operator HTMLLabelElement*() const;
 #endif
 };
 
 DECLARE_WEB_NODE_TYPE_CASTS(WebLabelElement);
 
 }  // namespace blink
 
 #endif