CrOS: Add firmware version to about://version

components/version_ui/version_ui_constants.cc

 // Copyright 2015 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 "components/version_ui/version_ui_constants.h"
 
 namespace version_ui {
 
 // Resource paths.
 const char kAboutVersionCSS[] = "about_version.css";
@@ skipping 18 matching lines @@
 const char kCompiler[] = "compiler";
 #endif
 const char kCopyright[] = "copyright";
 #if defined(OS_CHROMEOS)
 const char kCustomizationId[] = "customization_id";
 #endif
 #if !defined(OS_IOS)
 const char kExecutablePath[] = "executable_path";
 const char kExecutablePathName[] = "executable_path_name";
 #endif
+#if defined(OS_CHROMEOS)
+const char kFirmwareVersion[] = "firmware_version";
+#endif
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 const char kFlashPlugin[] = "flash_plugin";
 const char kFlashVersion[] = "flash_version";
 #endif
 #if !defined(OS_IOS)
 const char kJSEngine[] = "js_engine";
 const char kJSVersion[] = "js_version";
 #endif
 const char kOfficial[] = "official";
 #if !defined(OS_CHROMEOS)
@@ skipping 13 matching lines @@
 const char kRevision[] = "revision";
 const char kTitle[] = "title";
 const char kUserAgent[] = "useragent";
 const char kUserAgentName[] = "user_agent_name";
 const char kVariationsName[] = "variations_name";
 const char kVersion[] = "version";
 const char kVersionBitSize[] = "version_bitsize";
 const char kVersionModifier[] = "version_modifier";
 
 }  // namespace version_ui