[Mac] Refactor decoration divider code.

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

Index: chrome/browser/ui/cocoa/location_bar/bubble_decoration.h
diff --git a/chrome/browser/ui/cocoa/location_bar/bubble_decoration.h b/chrome/browser/ui/cocoa/location_bar/bubble_decoration.h
index 092fd12b46f90f042328a892fe558b3a3e58ff08..d41c19f8ba68c2ffacb45b8cabf57fe4106df4ce 100644
--- a/chrome/browser/ui/cocoa/location_bar/bubble_decoration.h
+++ b/chrome/browser/ui/cocoa/location_bar/bubble_decoration.h
@@ -36,10 +36,6 @@ class BubbleDecoration : public LocationBarDecoration {
   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);