[subresource_filter] Add Page Info subtitle on desktop + placeholder string

chrome/browser/ui/page_info/page_info_ui.cc

 // Copyright (c) 2012 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/ui/page_info/page_info_ui.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 321 matching lines @@
     switch (permission_result.source) {
       case PermissionStatusSource::MULTIPLE_DISMISSALS:
       case PermissionStatusSource::SAFE_BROWSING_BLACKLIST:
         message_id = IDS_PAGE_INFO_PERMISSION_AUTOMATICALLY_BLOCKED;
         break;
       default:
         break;
     }
   }
 
+  if (permission.type == CONTENT_SETTINGS_TYPE_SUBRESOURCE_FILTER)
+    message_id = IDS_PAGE_INFO_PERMISSION_SUBRESOURCE_FILTER_SUBTITLE;
+
   if (message_id == kInvalidResourceID)
     return base::string16();
   return l10n_util::GetStringUTF16(message_id);
 }
 
 // static
 SkColor PageInfoUI::GetPermissionDecisionTextColor() {
   return SK_ColorGRAY;
 }
 
@@ skipping 86 matching lines @@
 const gfx::ImageSkia PageInfoUI::GetCertificateIcon() {
   return gfx::CreateVectorIcon(kCertificateIcon, 16, gfx::kChromeIconGrey);
 }
 #endif
 
 // static
 bool PageInfoUI::ShouldShowCertificateLink() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kShowCertLink);
 }