Use MacViews for ContentSettingBubbles.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
index de44911f076776df6a931f0cacfb27fabc94deab..00669a466c44022e950b90d95d784c1a6426d91d 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
@@ -39,6 +39,7 @@
 #import "chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h"
 #import "chrome/browser/ui/cocoa/location_bar/ev_bubble_decoration.h"
 #import "chrome/browser/ui/cocoa/location_bar/keyword_hint_decoration.h"
+#import "chrome/browser/ui/cocoa/location_bar/location_bar_view_decoration.h"

[tapted, 2016/01/11 02:50:58]

do you need to git-add this?

 #import "chrome/browser/ui/cocoa/location_bar/location_icon_decoration.h"
 #import "chrome/browser/ui/cocoa/location_bar/manage_passwords_decoration.h"
 #import "chrome/browser/ui/cocoa/location_bar/page_action_decoration.h"
@@ -102,6 +103,7 @@ LocationBarViewMac::LocationBarViewMac(AutocompleteTextField* field,
       save_credit_card_decoration_(
           new SaveCreditCardDecoration(command_updater)),
       star_decoration_(new StarDecoration(command_updater)),
+      test_decoration_(new LocationBarViewDecoration()),
       translate_decoration_(new TranslateDecoration(command_updater)),
       zoom_decoration_(new ZoomDecoration(this)),
       keyword_hint_decoration_(new KeywordHintDecoration()),
@@ -409,6 +411,7 @@ void LocationBarViewMac::Layout() {
   [cell addLeftDecoration:location_icon_decoration_.get()];
   [cell addLeftDecoration:selected_keyword_decoration_.get()];
   [cell addLeftDecoration:ev_bubble_decoration_.get()];
+  [cell addRightDecoration:test_decoration_.get()];
   [cell addRightDecoration:star_decoration_.get()];
   [cell addRightDecoration:translate_decoration_.get()];
   [cell addRightDecoration:zoom_decoration_.get()];