Remove search::GetSearchTerms since it always returns empty string

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.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_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
@@ skipping 83 matching lines @@
   int GetTextWidth() const override;
   int GetWidth() const override;
   bool IsImeComposing() const override;
 
   // Implement the AutocompleteTextFieldObserver interface.
   NSRange SelectionRangeForProposedRange(NSRange proposed_range) override;
   void OnControlKeyChanged(bool pressed) override;
   bool CanCopy() override;
   base::scoped_nsobject<NSPasteboardItem> CreatePasteboardItem() override;
   void CopyToPasteboard(NSPasteboard* pboard) override;
-  bool ShouldEnableShowURL() override;
-  void ShowURL() override;
   void OnPaste() override;
   bool CanPasteAndGo() override;
   int GetPasteActionStringId() override;
   void OnPasteAndGo() override;
   void OnFrameChanged() override;
   void ClosePopup() override;
   void OnDidBeginEditing() override;
   void OnBeforeChange() override;
   void OnDidChange() override;
   void OnDidEndEditing() override;
   void OnInsertText() override;
   void OnDidDrawRect() override;
   bool OnDoCommandBySelector(SEL cmd) override;
   void OnSetFocus(bool control_down) override;
   void OnKillFocus() override;
   void OnMouseDown(NSInteger button_number) override;
-  bool ShouldSelectAllOnMouseDown() override;
 
   // Helper for LocationBarViewMac.  Optionally selects all in |field_|.
   void FocusLocation(bool select_all);
 
   // Helper to get the font to use in the field, exposed for the
   // popup.
   static NSFont* GetNormalFieldFont();
   static NSFont* GetBoldFieldFont();
   static NSFont* GetLargeFont();
   static NSFont* GetSmallFont();
@@ skipping 99 matching lines @@
   NSRange coalesced_range_update_;
 
   // The time of the first character insert operation that has not yet been
   // painted. Used to measure omnibox responsiveness with a histogram.
   base::TimeTicks insert_char_time_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_