Add DialogShowParams to <dialog>'s show() and showModal()

third_party/WebKit/Source/core/html/HTMLDialogElement.h

 /*
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef HTMLDialogElement_h
 #define HTMLDialogElement_h
 
 #include "core/html/HTMLElement.h"
 
 namespace blink {
 
+class DialogShowParams;
 class Document;
 class ExceptionState;
 class QualifiedName;
 
 class HTMLDialogElement final : public HTMLElement {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   DECLARE_NODE_FACTORY(HTMLDialogElement);
 
   void close(const String& returnValue, ExceptionState&);
   void closeDialog(const String& returnValue = String());
-  void show();
-  void showModal(ExceptionState&);
+  void show(const DialogShowParams&);
+  void showModal(const DialogShowParams&, ExceptionState&);
   void removedFrom(ContainerNode*) override;
 
   // NotCentered means do not center the dialog. Centered means the dialog has
   // been centered and centeredPosition() is set. NeedsCentering means attempt
   // to center on the next layout, then set to Centered or NotCentered.
   enum CenteringMode { NotCentered, Centered, NeedsCentering };
   CenteringMode getCenteringMode() const { return m_centeringMode; }
   LayoutUnit centeredPosition() const {
     DCHECK_EQ(m_centeringMode, Centered);
     return m_centeredPosition;
@@ skipping 17 matching lines @@
   void scheduleCloseEvent();
 
   CenteringMode m_centeringMode;
   LayoutUnit m_centeredPosition;
   String m_returnValue;
 };
 
 }  // namespace blink
 
 #endif  // HTMLDialogElement_h