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

chrome/browser/autocomplete/autocomplete_edit_view_gtk.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_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 129 matching lines @@
   virtual bool OnAfterPossibleChange();
   virtual gfx::NativeView GetNativeView() const;
   virtual CommandUpdater* GetCommandUpdater();
   virtual void SetInstantSuggestion(const string16& suggestion);
   virtual string16 GetInstantSuggestion() const;
   virtual int TextWidth() const;
   virtual bool IsImeComposing() const;
 
 #if defined(TOOLKIT_VIEWS)
   virtual views::View* AddToView(views::View* parent);
+  virtual int OnPerformDrop(const views::DropTargetEvent& event);
 
   // Enables accessibility on AutocompleteEditView.
   void EnableAccessibility();
 
   // A factory method to create an AutocompleteEditView instance initialized for
   // linux_views.  This currently returns an instance of
   // AutocompleteEditViewGtk only, but AutocompleteEditViewViews will
   // be added as an option when TextfieldViews is enabled.
   static AutocompleteEditView* Create(AutocompleteEditController* controller,
                                       ToolbarModel* toolbar_model,
@@ skipping 382 matching lines @@
   ui::GtkSignalRegistrar signals_;
 
 #if defined(TOOLKIT_VIEWS)
   scoped_ptr<AccessibleWidgetHelper> accessible_widget_helper_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewGtk);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_