Oilpan: Move core/clipboard/ to oilpan's heap

Source/core/clipboard/Pasteboard.h

Index: Source/core/clipboard/Pasteboard.h
diff --git a/Source/core/clipboard/Pasteboard.h b/Source/core/clipboard/Pasteboard.h
index 93036ca11076a5fa0038f432a0ec7c758b1a6d8a..ae44a616df8800773ff45cc1872ef06fcd5182c7 100644
--- a/Source/core/clipboard/Pasteboard.h
+++ b/Source/core/clipboard/Pasteboard.h
@@ -26,6 +26,7 @@
 #ifndef Pasteboard_h
 #define Pasteboard_h
 
+#include "heap/Handle.h"
 #include "public/platform/WebClipboard.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
@@ -49,7 +50,7 @@ public:
     static Pasteboard* generalPasteboard();
     void writePlainText(const String&, SmartReplaceOption);
     void writeImage(Image*, const KURL&, const String& title);
-    void writeDataObject(PassRefPtr<DataObject>);
+    void writeDataObject(PassRefPtrWillBeRawPtr<DataObject>);
     bool canSmartReplace();
     bool isHTMLAvailable();
     String plainText();