Update AutocompleteTextFieldEditor to use non-deprecated dragging APIs.

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.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_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 27 matching lines @@
   // Called when the control-key state changes while the field is
   // first responder.
   virtual void OnControlKeyChanged(bool pressed) = 0;
 
   // Called when the user pastes into the field.
   virtual void OnPaste() = 0;
 
   // Return |true| if there is a selection to copy.
   virtual bool CanCopy() = 0;
 
-  // Clears the |pboard| and adds the field's current selection.
-  // Called when the user does a copy or drag.
+  // Creates a pasteboard item from the field's current selection.
+  virtual base::scoped_nsobject<NSPasteboardItem> CreatePasteboardItem() = 0;
+
+  // Copies the pasteboard item returned from |CreatePasteboardItem()| to
+  // |pboard|.
   virtual void CopyToPasteboard(NSPasteboard* pboard) = 0;
 
   // Returns true if the Show URL option should be available.
   virtual bool ShouldEnableShowURL() = 0;
 
   // Shows the underlying URL.  See OmniboxView::ShowURL().
   virtual void ShowURL() = 0;
 
   // Returns true if the current clipboard text supports paste and go
   // (or paste and search).
@@ skipping 129 matching lines @@
 // Draw gray text suggestion in |controlView|.
 void DrawGrayTextAutocompletion(NSAttributedString* mainText,
                                 NSString* suggestText,
                                 NSColor* suggestColor,
                                 NSView* controlView,
                                 NSRect frame);
 
 }  // namespace autocomplete_text_field
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_