[Mac] Fixed the content settings bubble

chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h

Index: chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h
diff --git a/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h b/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h
index e26d04bbdb5ddbcb585d9ad56b45e8d37f7f3095..23d0a0e17ad6fbad98c578d0d9e4f0d24cd5077b 100644
--- a/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h
+++ b/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.h
@@ -16,6 +16,7 @@
 // of view when a page attempts to show a popup and the popup blocker is on.
 
 @class ContentSettingAnimationState;
+@class ContentSettingBubbleController;
 class ContentSettingImageModel;
 class LocationBarViewMac;
 class Profile;
@@ -70,6 +71,9 @@ class ContentSettingDecoration : public ImageDecoration {
   CGFloat text_width_;
   base::scoped_nsobject<NSAttributedString> animated_text_;
 
+  // The window of the content setting bubble.
+  base::scoped_nsobject<NSWindow> bubbleWindow_;
+
   DISALLOW_COPY_AND_ASSIGN(ContentSettingDecoration);
 };