Hitting Tab should always move cursor to end of omnibox text.

chrome/browser/autocomplete/autocomplete_edit_view_mac.h

 // Copyright (c) 2010 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_EDIT_VIEW_MAC_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
@@ skipping 66 matching lines @@
                                            bool save_original_selection);
   virtual bool OnInlineAutocompleteTextMaybeChanged(
       const string16& display_text, size_t user_text_length);
   virtual void OnStartingIME();
   virtual void OnRevertTemporaryText();
   virtual void OnBeforePossibleChange();
   virtual bool OnAfterPossibleChange();
   virtual gfx::NativeView GetNativeView() const;
   virtual CommandUpdater* GetCommandUpdater();
   virtual void SetInstantSuggestion(const string16& input);
+  virtual string16 GetInstantSuggestion() const;
   virtual int TextWidth() const;
   virtual bool IsImeComposing() const;
 
   // Implement the AutocompleteTextFieldObserver interface.
   virtual NSRange SelectionRangeForProposedRange(NSRange proposed_range);
   virtual void OnControlKeyChanged(bool pressed);
   virtual bool CanCopy();
   virtual void CopyToPasteboard(NSPasteboard* pboard);
   virtual void OnPaste();
   virtual bool CanPasteAndGo();
   virtual int GetPasteActionStringId();
   virtual void OnPasteAndGo();
   virtual void OnFrameChanged();
   virtual void OnDidBeginEditing();
   virtual void OnDidChange();
   virtual void OnDidEndEditing();
   virtual bool OnDoCommandBySelector(SEL cmd);
   virtual void OnSetFocus(bool control_down);
   virtual void OnKillFocus();
 
-  bool CommitSuggestText();
-
   // Helper for LocationBarViewMac.  Optionally selects all in |field_|.
   void FocusLocation(bool select_all);
 
   // Helper to get appropriate contents from |clipboard|.  Returns
   // empty string if no appropriate data is found on |clipboard|.
   static string16 GetClipboardText(ui::Clipboard* clipboard);
 
   // Helper to get the font to use in the field, exposed for the
   // popup.
   static NSFont* GetFieldFont();
@@ skipping 34 matching lines @@
   // setting the display text.  Most callers should use |SetText()| instead.
   void SetTextInternal(const string16& display_text);
 
   // Update the field with |display_text| and set the selection.
   void SetTextAndSelectedRange(const string16& display_text,
                                const NSRange range);
 
   // Returns the non-suggest portion of |field_|'s string value.
   NSString* GetNonSuggestTextSubstring() const;
 
+  // Returns the suggest portion of |field_|'s string value.
+  NSString* GetSuggestTextSubstring() const;
+
   // Pass the current content of |field_| to SetText(), maintaining
   // any selection.  Named to be consistent with GTK and Windows,
   // though here we cannot really do the in-place operation they do.
   void EmphasizeURLComponents();
 
   // Calculates text attributes according to |display_text| and applies them
   // to the given |as| object.
   void ApplyTextAttributes(const string16& display_text,
                            NSMutableAttributedString* as);
 
@@ skipping 29 matching lines @@
   // Was the delete key pressed with an empty selection at the end of the edit?
   bool delete_at_end_pressed_;
 
   // The maximum/standard line height for the displayed text.
   CGFloat line_height_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewMac);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_