Add Copy URL option to Omnibox context menu when URL is replaced by Instant Extended.

chrome/browser/ui/gtk/omnibox/omnibox_view_gtk.h

 // Copyright (c) 2012 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_UI_GTK_OMNIBOX_OMNIBOX_VIEW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_VIEW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <algorithm>
@@ skipping 161 matching lines @@
                        GdkDragContext*, gint, gint, GtkSelectionData*,
                        guint, guint);
   CHROMEGTK_CALLBACK_4(OmniboxViewGtk, void, HandleDragDataGet,
                        GdkDragContext*, GtkSelectionData*, guint, guint);
   CHROMEGTK_CALLBACK_1(OmniboxViewGtk, void, HandleDragBegin,
                        GdkDragContext*);
   CHROMEGTK_CALLBACK_1(OmniboxViewGtk, void, HandleDragEnd,
                        GdkDragContext*);
   CHROMEGTK_CALLBACK_0(OmniboxViewGtk, void, HandleBackSpace);
   CHROMEGTK_CALLBACK_0(OmniboxViewGtk, void, HandleCopyClipboard);
+  CHROMEGTK_CALLBACK_0(OmniboxViewGtk, void, HandleCopyURLClipboard);
   CHROMEGTK_CALLBACK_0(OmniboxViewGtk, void, HandleCutClipboard);
   CHROMEGTK_CALLBACK_0(OmniboxViewGtk, void, HandlePasteClipboard);
   CHROMEGTK_CALLBACK_1(OmniboxViewGtk, gboolean, HandleExposeEvent,
                        GdkEventExpose*);
   CHROMEGTK_CALLBACK_1(OmniboxViewGtk, void, HandleWidgetDirectionChanged,
                        GtkTextDirection);
   CHROMEGTK_CALLBACK_2(OmniboxViewGtk, void, HandleDeleteFromCursor,
                        GtkDeleteType, gint);
   // We connect to this so we can determine our toplevel window, so we can
   // listen to focus change events on it.
@@ skipping 271 matching lines @@
   // The view that is going to be focused next. Only valid while handling
   // "focus-out" events.
   GtkWidget* going_to_focus_;
 
   ui::GtkSignalRegistrar signals_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_VIEW_GTK_H_