Plumb the DragOperation through all the layers between the platform DnD code ...

chrome/browser/views/tab_contents/tab_contents_view_win.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 #define CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 
 #include "base/gfx/size.h"
 #include "base/scoped_ptr.h"
 #include "base/timer.h"
@@ skipping 36 matching lines @@
   virtual void SizeContents(const gfx::Size& size);
   virtual void Focus();
   virtual void SetInitialFocus();
   virtual void StoreFocus();
   virtual void RestoreFocus();
   virtual bool IsDoingDrag() const;
   virtual void CancelDragAndCloseTab();
 
   // Backend implementation of RenderViewHostDelegate::View.
   virtual void ShowContextMenu(const ContextMenuParams& params);
-  virtual void StartDragging(const WebDropData& drop_data);
-  virtual void UpdateDragCursor(bool is_drop_target);
+  virtual void StartDragging(const WebDropData& drop_data,
+                             WebKit::WebDragOperationsMask operations);
+  virtual void UpdateDragCursor(WebKit::WebDragOperation operation);
   virtual void GotFocus();
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
   // WidgetWin overridde.
   virtual views::FocusManager* GetFocusManager();
 
  private:
   // A helper method for closing the tab.
   void CloseTab();
@@ skipping 62 matching lines @@
   // has finished.
   bool close_tab_after_drag_ends_;
 
   // Used to close the tab after the stack has unwound.
   base::OneShotTimer<TabContentsViewWin> close_tab_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewWin);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_