Reland: Update image and text color when row is selected in the chooser on Mac

chrome/browser/ui/cocoa/chooser_content_view_cocoa.h

 // Copyright 2016 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_CHOOSER_CONTENT_VIEW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_CHOOSER_CONTENT_VIEW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
@@ skipping 137 matching lines @@
 
 // Called when the chooser is closed.
 - (void)close;
 
 // Called when "Re-scan" button is pressed.
 - (void)onRescan:(id)sender;
 
 // Called when the "Get help" button is pressed.
 - (void)onHelpPressed:(id)sender;
 
-// Gets the image from table row view. For testing only.
+// Update the color of the image and text in the table row view.
+- (void)updateContentRowColor;
+
+// Gets the image from table row view.

[Jeffrey Yasskin, 2016/09/26 22:25:46]

Would it make sense to say "For testing and internal use only." here? I don't
think we want to make these part of the production interface, even if
updateContentRowColor has to use them.

[juncai, 2016/09/27 22:10:48]

Done.

 - (NSImageView*)tableRowViewImage:(NSInteger)row;
 
-// Gets the text from table row view. For testing only.
+// Gets the text from table row view.
 - (NSTextField*)tableRowViewText:(NSInteger)row;
 
-// Gets the paired status from table row view. For testing only.
+// Gets the paired status from table row view.
 - (NSTextField*)tableRowViewPairedStatus:(NSInteger)row;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_CHOOSER_CONTENT_VIEW_COCOA_H_