[Mac] Refactor decoration divider code.

chrome/browser/ui/cocoa/location_bar/bubble_decoration.h

 // Copyright (c) 2011 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_LOCATION_BAR_BUBBLE_DECORATION_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_BUBBLE_DECORATION_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/gtest_prod_util.h"
@@ skipping 18 matching lines @@
   void SetFont(NSFont* font);
   void SetRetinaBaselineOffset(CGFloat offset);
 
   // Implement |LocationBarDecoration|.
   CGFloat GetWidthForSpace(CGFloat width) override;
   NSRect GetBackgroundFrame(NSRect frame) override;
   void DrawInFrame(NSRect frame, NSView* control_view) override;
   NSFont* GetFont() const override;
 
  protected:
-  // Returns the amount of padding between the divider and the omnibox text.
-  // Returns 0 in non-MD since there's no divider.
-  CGFloat DividerPadding() const;
-
   // Helper returning bubble width for the given |image| and |label|
   // assuming |font_| (for sizing text).  Arguments can be nil.
   CGFloat GetWidthForImageAndLabel(NSImage* image, NSString* label);
 
   // Helper to return where the image is drawn, for subclasses to drag
   // from.  |frame| is the decoration's frame in the containing cell.
   NSRect GetImageRectInFrame(NSRect frame);
 
   // Returns the text color when the theme is dark.
   virtual NSColor* GetDarkModeTextColor();
@@ skipping 12 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(SelectedKeywordDecorationTest,
                            UsesPartialKeywordIfNarrow);
 
   // Contains any Retina-only baseline adjustment for |label_|.
   CGFloat retina_baseline_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleDecoration);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_BUBBLE_DECORATION_H_