Decouple MediaStreamInfoBarDelegate from GroupedPermissionInfoBarDelegate

chrome/browser/permissions/permission_infobar_delegate.cc

Index: chrome/browser/permissions/permission_infobar_delegate.cc
diff --git a/chrome/browser/permissions/permission_infobar_delegate.cc b/chrome/browser/permissions/permission_infobar_delegate.cc
index 0c6d30f970979177b8bec6514f54501af634011a..669e6cbcc5a224548ffacc5c6d301cd11c8b398c 100644
--- a/chrome/browser/permissions/permission_infobar_delegate.cc
+++ b/chrome/browser/permissions/permission_infobar_delegate.cc
@@ -37,6 +37,10 @@ PermissionInfoBarDelegate::PermissionInfoBarDelegate(
       user_gesture_(user_gesture),
       persist_(true) {}
 
+std::vector<int> PermissionInfoBarDelegate::content_setting() const {

[dominickn, 2016/09/20 08:01:36]

Nit: it's strange to have a singular content_setting() name for a method that
returns a vector of things. Rename to content_settings()?

[lshang, 2016/09/21 03:47:39]

Done.

+  return std::vector<int>(1, content_settings_type_);
+}
+
 bool PermissionInfoBarDelegate::ShouldShowPersistenceToggle() const {
   return (permission_type_ == content::PermissionType::GEOLOCATION) &&
          PermissionUtil::ShouldShowPersistenceToggle();