Mark plugin requires restart code/resources Linux-only.

chrome/common/render_messages.h

 // 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.
 
 // Multiply-included file, no traditional include guard.
 #include <stdint.h>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 37 matching lines @@
   kBlockedNoLoading,
   kComponentUpdateRequired,
   kDisabled,
   // Flash is blocked, but user can click on the placeholder to trigger the
   // Flash permission prompt.
   kFlashHiddenPreferHtml,
   kNotFound,
   kOutdatedBlocked,
   kOutdatedDisallowed,
   kPlayImportantContent,
+#if defined(OS_LINUX)
   kRestartRequired,
+#endif
   kUnauthorized,
 };
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_H_
 
 #define IPC_MESSAGE_START ChromeMsgStart
 
 IPC_ENUM_TRAITS_MAX_VALUE(ChromeViewHostMsg_GetPluginInfo_Status,
                           ChromeViewHostMsg_GetPluginInfo_Status::kUnauthorized)
 IPC_ENUM_TRAITS_MAX_VALUE(ThemeBackgroundImageAlignment,
@@ skipping 263 matching lines @@
 // process so that they can be assigned to an Instant renderer.
 IPC_MESSAGE_CONTROL2(ChromeViewMsg_SetSearchURLs,
                      std::vector<GURL> /* search_urls */,
                      GURL /* new_tab_page_url */)
 
 #if BUILDFLAG(ENABLE_PLUGINS)
 // Sent by the renderer to check if crash reporting is enabled.
 IPC_SYNC_MESSAGE_CONTROL0_1(ChromeViewHostMsg_IsCrashReportingEnabled,
                             bool /* enabled */)
 #endif