Update omnibox dropdown selection/hover background drawing for MD.

chrome/browser/ui/views/omnibox/omnibox_result_view.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_VIEWS_OMNIBOX_OMNIBOX_RESULT_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_RESULT_VIEW_H_
 
 #include <stddef.h>
 
 #include <vector>
@@ skipping 170 matching lines @@
                         const base::string16& text,
                         int text_type) const;
 
   // AppendAnswerText will break up the |text| into bold and non-bold pieces
   // and pass each to this helper with the correct |is_bold| value.
   void AppendAnswerTextHelper(gfx::RenderText* destination,
                               const base::string16& text,
                               int text_type,
                               bool is_bold) const;
 
-  // Returns the necessary margin, if any, at the start and end of the view.
-  // This allows us to keep the icon and text in the view aligned with the
-  // location bar contents. For a left-to-right language, StartMargin()
-  // and EndMargin() correspond to the left and right margins, respectively.
-  int StartMargin() const;
-  int EndMargin() const;
-
   static int default_icon_size_;
 
   // This row's model and model index.
   OmniboxPopupContentsView* model_;
   size_t model_index_;
 
   LocationBarView* location_bar_view_;
 
   const gfx::FontList font_list_;
   int font_height_;
@@ skipping 22 matching lines @@
   mutable std::unique_ptr<gfx::RenderText> separator_rendertext_;
   mutable std::unique_ptr<gfx::RenderText> keyword_contents_rendertext_;
   mutable std::unique_ptr<gfx::RenderText> keyword_description_rendertext_;
 
   mutable int separator_width_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxResultView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_RESULT_VIEW_H_