Allow dragging and dropping of URLs to any portion of the toolbar view....

chrome/browser/autocomplete/autocomplete_edit_view.h

 // Copyright (c) 2010 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.
 
 // This file defines the interface class AutocompleteEditView.  Each toolkit
 // will implement the edit view differently, so that code is inherently
 // platform specific.  However, the AutocompleteEditModel needs to do some
 // communication with the view.  Since the model is shared between platforms,
 // we need to define an interface that all view implementations will share.
 
 #ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_
 #pragma once
 
 #include <string>
 
 #include "base/string16.h"
 #include "chrome/common/page_transition_types.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class AutocompleteEditModel;
 class CommandUpdater;
 class GURL;
 class TabContents;
 
 #if defined(TOOLKIT_VIEWS)
 namespace views {
+class DropTargetEvent;
 class View;
 }  // namespace views
 #endif
 
 class AutocompleteEditView {
  public:
   // Used by the automation system for getting at the model from the view.
   virtual AutocompleteEditModel* model() = 0;
   virtual const AutocompleteEditModel* model() const = 0;
 
@@ skipping 129 matching lines @@
   // returned value includes margins.
   virtual int TextWidth() const = 0;
 
   // Returns true if the user is composing something in an IME.
   virtual bool IsImeComposing() const = 0;
 
 #if defined(TOOLKIT_VIEWS)
   // Adds the autocomplete edit view to view hierarchy and
   // returns the views::View of the edit view.
   virtual views::View* AddToView(views::View* parent) = 0;
+
+  // Performs the drop of a drag and drop operation on the view.
+  virtual int OnPerformDrop(const views::DropTargetEvent& event) = 0;
 #endif
 
   virtual ~AutocompleteEditView() {}
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_