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

chrome/browser/ui/views/omnibox/omnibox_view_win.h

Index: chrome/browser/ui/views/omnibox/omnibox_view_win.h
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_win.h b/chrome/browser/ui/views/omnibox/omnibox_view_win.h
index 2d5d7a22743dfbcc5c4be56883814c7b6fa69257..39c38ae3d1cd5b5615049a0ae3e9ee61255a6823 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_win.h
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_win.h
@@ -387,6 +387,10 @@ class OmniboxViewWin
   // Common implementation for performing a drop on the edit view.
   int OnPerformDropImpl(const ui::DropTargetEvent& event, bool in_drag);
 
+  // Whether to show the menu item for copying the URL.
+  bool ShouldAddCopyURL() const;
+  void CopyURL();
+
   // Handle of RichEdit dll.
   static HMODULE loaded_library_module_;