Fixed WebDragData's wrong dependency.

Source/modules/filesystem/DraggedIsolatedFileSystemImpl.h

Index: Source/modules/filesystem/DraggedIsolatedFileSystemImpl.h
diff --git a/Source/modules/filesystem/DraggedIsolatedFileSystem.h b/Source/modules/filesystem/DraggedIsolatedFileSystemImpl.h
similarity index 70%
rename from Source/modules/filesystem/DraggedIsolatedFileSystem.h
rename to Source/modules/filesystem/DraggedIsolatedFileSystemImpl.h
index 84d01aa16d2f5e04d318cfd77dd42a05131a31a9..03a3997bafadc10053ce296be9246a52c7b9a9e2 100644
--- a/Source/modules/filesystem/DraggedIsolatedFileSystem.h
+++ b/Source/modules/filesystem/DraggedIsolatedFileSystemImpl.h
@@ -28,10 +28,11 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef DraggedIsolatedFileSystem_h
-#define DraggedIsolatedFileSystem_h
+#ifndef DraggedIsolatedFileSystemImpl_h
+#define DraggedIsolatedFileSystemImpl_h
 
 #include "core/clipboard/DataObject.h"
+#include "core/clipboard/DraggedIsolatedFileSystem.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/text/WTFString.h"
@@ -40,28 +41,30 @@ namespace blink {
 
 class DOMFileSystem;
 
-class DraggedIsolatedFileSystem final : public NoBaseWillBeGarbageCollectedFinalized<DraggedIsolatedFileSystem>, public WillBeHeapSupplement<DataObject> {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DraggedIsolatedFileSystem);
+class DraggedIsolatedFileSystemImpl final : public NoBaseWillBeGarbageCollectedFinalized<DraggedIsolatedFileSystemImpl>, public DraggedIsolatedFileSystem, public WillBeHeapSupplement<DataObject> {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DraggedIsolatedFileSystemImpl);
 public:
-    virtual ~DraggedIsolatedFileSystem();
+    virtual ~DraggedIsolatedFileSystemImpl();
 
-    static PassOwnPtrWillBeRawPtr<DraggedIsolatedFileSystem> create(DataObject& host, const String& filesystemId)
+    static PassOwnPtrWillBeRawPtr<DraggedIsolatedFileSystemImpl> create(DataObject& host, const String& filesystemId)
     {
-        return adoptPtrWillBeNoop(new DraggedIsolatedFileSystem(host, filesystemId));
+        return adoptPtrWillBeNoop(new DraggedIsolatedFileSystemImpl(host, filesystemId));
     }
 
     static DOMFileSystem* getDOMFileSystem(DataObject* host, ExecutionContext*);
 
     static const char* supplementName();
-    static DraggedIsolatedFileSystem* from(DataObject*);
+    static DraggedIsolatedFileSystemImpl* from(DataObject*);
 
     void trace(Visitor*);
 
+    static void prepareForDataObject(DataObject*, const String& filesystemId);
+
 private:
-    DraggedIsolatedFileSystem(DataObject& host, const String& filesystemId);
+    DraggedIsolatedFileSystemImpl(DataObject& host, const String& filesystemId);
     PersistentWillBeMember<DOMFileSystem> m_filesystem;
 };
 
 } // namespace blink
 
-#endif // DraggedIsolatedFileSystem_h
+#endif // DraggedIsolatedFileSystemImpl_h