Support 'Paste and Go' action in omnibox Aura.

chrome/browser/ui/omnibox/omnibox_view.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.
 
 // This file defines the interface class OmniboxView.  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.
 
@@ skipping 199 matching lines @@
   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
 
   // Returns a string with any leading javascript schemas stripped from the
   // input text.
   static string16 StripJavascriptSchemas(const string16& text);
 
+  // Returns the current clipboard contents as a string that can be pasted in.
+  // In addition to just getting CF_UNICODETEXT out, this can also extract URLs
+  // from bookmarks on the clipboard.
+  static string16 GetClipboardText();
+
   virtual ~OmniboxView() {}
 };
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_VIEW_H_