Safe browsing subresource filter bubble UI skeleton.

chrome/browser/ui/content_settings/content_setting_image_model.h

Index: chrome/browser/ui/content_settings/content_setting_image_model.h
diff --git a/chrome/browser/ui/content_settings/content_setting_image_model.h b/chrome/browser/ui/content_settings/content_setting_image_model.h
index 7daf444a9918160213a16175806118d14ff7b84d..33011cbe5baac6e43fecf8e238f6a9eb126fff13 100644
--- a/chrome/browser/ui/content_settings/content_setting_image_model.h
+++ b/chrome/browser/ui/content_settings/content_setting_image_model.h
@@ -65,6 +65,9 @@ class ContentSettingImageModel {
   int explanatory_string_id() const { return explanatory_string_id_; }
   const base::string16& get_tooltip() const { return tooltip_; }
 
+  static std::unique_ptr<ContentSettingImageModel>
+  CreateSubresourceFilterImageModelForTesting();
+
  protected:
   ContentSettingImageModel();
   void SetIconByResourceId(int id);