Separate out the Windows bookmark handling code out of the core drag & drop target class. This matc…

chrome/browser/tab_contents/web_drop_target_win.h

 // Copyright (c) 2011 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_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_
 #define CHROME_BROWSER_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "ui/base/dragdrop/drop_target.h"
 
 class InterstitialDropTarget;
 class RenderViewHost;
-class TabContentsWrapper;
 
 namespace content {
 class WebContents;
+class WebDragDestDelegate;
 }
 
 // A helper object that provides drop capabilities to a TabContents. The
 // DropTarget handles drags that enter the region of the WebContents by
 // passing on the events to the renderer.
 class WebDropTarget : public ui::DropTarget {
  public:
   // Create a new WebDropTarget associating it with the given HWND and
   // WebContents.
   WebDropTarget(HWND source_hwnd, content::WebContents* contents);
   virtual ~WebDropTarget();
 
   void set_drag_cursor(WebKit::WebDragOperation op) {
     drag_cursor_ = op;
   }
 
+  content::WebDragDestDelegate* delegate() const { return delegate_; }
+  void set_delegate(content::WebDragDestDelegate* d) { delegate_ = d; }
+
  protected:
   virtual DWORD OnDragEnter(IDataObject* data_object,
                             DWORD key_state,
                             POINT cursor_position,
                             DWORD effect);
 
   virtual DWORD OnDragOver(IDataObject* data_object,
                            DWORD key_state,
                            POINT cursor_position,
                            DWORD effect);
 
   virtual void OnDragLeave(IDataObject* data_object);
 
   virtual DWORD OnDrop(IDataObject* data_object,
                        DWORD key_state,
                        POINT cursor_position,
                        DWORD effect);
 
  private:
   // Our associated WebContents.
   content::WebContents* web_contents_;
 
-  // The TabContentsWrapper for |tab_contents_|.
-  // Weak reference; may be NULL if the contents aren't contained in a wrapper
-  // (e.g. WebUI dialogs).
-  TabContentsWrapper* tab_;
-
   // We keep track of the render view host we're dragging over.  If it changes
   // during a drag, we need to re-send the DragEnter message.  WARNING:
   // this pointer should never be dereferenced.  We only use it for comparing
   // pointers.
   RenderViewHost* current_rvh_;
 
   // Used to determine what cursor we should display when dragging over web
   // content area.  This can be updated async during a drag operation.
   WebKit::WebDragOperation drag_cursor_;
 
   // A special drop target handler for when we try to d&d while an interstitial
   // page is showing.
   scoped_ptr<InterstitialDropTarget> interstitial_drop_target_;
 
+  // A delegate that can receive drag information about drag events.
+  content::WebDragDestDelegate* delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(WebDropTarget);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_