[Mac] Cmd-Return in the omnibox should revert the omnibox text back to its or...

chrome/browser/autocomplete/autocomplete_popup_view_mac.h

 // Copyright (c) 2009 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_POPUP_VIEW_MAC_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
@@ skipping 51 matching lines @@
   }
   virtual void UpdatePopupAppearance();
 
   // This is only called by model in SetSelectedLine() after updating
   // everything.  Popup should already be visible.
   virtual void PaintUpdatesNow();
 
   // Returns the popup's model.
   virtual AutocompletePopupModel* GetModel();
 
-  // Updates model_'s sense of selected line from the UI before
-  // calling edit_view_'s AcceptInput().  Used by internal Objective-C
-  // helper object.
-  void AcceptInput();
+  // Called when the user clicks an item.  Opens the hovered item and
+  // potentially dismisses the popup without formally selecting anything in the
+  // model.
+  void OnClick();
 
   // Called when the user middle-clicks an item.  Opens the hovered
   // item in a background tab.
   void OnMiddleClick();
 
   // Return the text to show for the match, based on the match's
   // contents and description.  Result will be in |font|, with the
   // boldfaced version used for matches.
   static NSAttributedString* MatchText(const AutocompleteMatch& match,
                                 gfx::Font& font,
@@ skipping 16 matching lines @@
   static NSMutableAttributedString* ElideString(
       NSMutableAttributedString* aString,
       const std::wstring originalString,
       const gfx::Font& font,
       const float cellWidth);
 
  private:
   // Create the popup_ instance if needed.
   void CreatePopupIfNeeded();
 
+  // Opens the URL corresponding to the given |row|.  If |force_background| is
+  // true, forces the URL to open in a background tab.  Otherwise, determines
+  // the proper window open disposition from the modifier flags on |[NSEvent
+  // currentEvent]|.
+  void OpenURLForRow(int row, bool force_background);
+
   scoped_ptr<AutocompletePopupModel> model_;
   AutocompleteEditViewMac* edit_view_;
   const BubblePositioner* bubble_positioner_;  // owned by toolbar controller
   NSTextField* field_;  // owned by tab controller
 
   scoped_nsobject<AutocompleteMatrixTarget> matrix_target_;
   // TODO(shess): Before checkin review implementation to make sure
   // that popup_'s object hierarchy doesn't keep references to
   // destructed objects.
   scoped_nsobject<NSWindow> popup_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupViewMac);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_