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

chrome/browser/ui/cocoa/chooser_content_view_cocoa.h

Index: chrome/browser/ui/cocoa/chooser_content_view_cocoa.h
diff --git a/chrome/browser/ui/cocoa/chooser_content_view_cocoa.h b/chrome/browser/ui/cocoa/chooser_content_view_cocoa.h
index a7c5b333282ed84b90e451f572f53fbbe016cf8e..f5187dba11b59a94f9b5ced9d0325c334e078540 100644
--- a/chrome/browser/ui/cocoa/chooser_content_view_cocoa.h
+++ b/chrome/browser/ui/cocoa/chooser_content_view_cocoa.h
@@ -155,13 +155,16 @@ class ChooserController;
 // 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