Decouple MediaStreamInfoBarDelegate from GroupedPermissionInfoBarDelegate

chrome/browser/permissions/permission_infobar_delegate.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/permissions/permission_infobar_delegate.h"
 
 #include "chrome/browser/permissions/permission_decision_auto_blocker.h"
 #include "chrome/browser/permissions/permission_request.h"
 #include "chrome/browser/permissions/permission_uma_util.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 19 matching lines @@
     const PermissionSetCallback& callback)
     : requesting_origin_(requesting_origin),
       permission_type_(permission_type),
       content_settings_type_(content_settings_type),
       profile_(profile),
       callback_(callback),
       action_taken_(false),
       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();
 }
 
 base::string16 PermissionInfoBarDelegate::GetMessageText() const {
   return l10n_util::GetStringFUTF16(
       GetMessageResourceId(),
       url_formatter::FormatUrlForSecurityDisplay(
           requesting_origin_,
@@ skipping 42 matching lines @@
 
   SetPermission(update_content_setting, DENIED);
   return true;
 }
 
 void PermissionInfoBarDelegate::SetPermission(bool update_content_setting,
                                               PermissionAction decision) {
   action_taken_ = true;
   callback_.Run(update_content_setting, decision);
 }