[Mac][Material Design] Update Omnibox dropdown on Mac to MD

chrome/browser/ui/cocoa/omnibox/omnibox_popup_cell.h

 // Copyright 2013 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_POPUP_CELL_H_
 #define CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_POPUP_CELL_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 27 matching lines @@
   // Is this suggestion an answer or calculator result.
   bool isAnswer_;
 
   AutocompleteMatch::Type matchType_;
 }
 
 @property(readonly, retain, nonatomic) NSAttributedString* contents;
 @property(readonly, retain, nonatomic) NSAttributedString* description;
 @property(readonly, retain, nonatomic) NSAttributedString* prefix;
 @property(readonly, retain, nonatomic) NSImage* image;
+@property(retain, nonatomic) NSImage* incognitoImage;
 @property(readonly, retain, nonatomic) NSImage* answerImage;
 @property(readonly, nonatomic) CGFloat contentsOffset;
 @property(readonly, nonatomic) BOOL isContentsRTL;
 @property(readonly, nonatomic) bool isAnswer;
 @property(readonly, nonatomic) AutocompleteMatch::Type matchType;
 
 - (instancetype)initWithMatch:(const AutocompleteMatch&)match
                contentsOffset:(CGFloat)contentsOffset
                         image:(NSImage*)image
-                  answerImage:(NSImage*)answerImage;
+                  answerImage:(NSImage*)answerImage
+                 forDarkTheme:(BOOL)isDarkTheme;
 
 // Returns the width of the match contents.
 - (CGFloat)getMatchContentsWidth;
 
 @end
 
 // Overrides how cells are displayed.  Uses information from
 // OmniboxPopupCellData to draw suggestion results.
 @interface OmniboxPopupCell : NSCell
 
 - (void)drawMatchWithFrame:(NSRect)cellFrame inView:(NSView*)controlView;
 
 // Returns the offset of the start of the contents in the input text for the
 // given match. It is costly to compute this offset, so it is computed once and
 // shared by all OmniboxPopupCell instances through OmniboxPopupViewMac parent.
 + (CGFloat)computeContentsOffset:(const AutocompleteMatch&)match;
 
-+ (NSAttributedString*)createSeparatorString;
++ (NSAttributedString*)createSeparatorStringForDarkTheme:(BOOL)isDarkTheme;
 
 @end
 
 const CGFloat kContentLineHeight = 25.0;
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_POPUP_CELL_H_