Clean up chrome://version page.

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";
 const char kVersionJS[] = "version.js";
 
 // Message handlers.
 const char kRequestVersionInfo[] = "requestVersionInfo";
 const char kReturnFilePaths[] = "returnFilePaths";
 const char kReturnFlashVersion[] = "returnFlashVersion";
 const char kReturnVariationInfo[] = "returnVariationInfo";
 
 // Strings.
 const char kApplicationLabel[] = "application_label";
+#if defined(OS_CHROMEOS)
 const char kARC[] = "arc_label";
+#endif
 const char kCL[] = "cl";
 const char kCommandLine[] = "command_line";
 const char kCommandLineName[] = "command_line_name";
 const char kCompany[] = "company";
+#if defined(OS_WIN)
+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_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)
 const char kOSName[] = "os_name";
 const char kOSType[] = "os_type";
+#endif
+#if defined(OS_ANDROID)
 const char kOSVersion[] = "os_version";
+#endif
+#if defined(OS_CHROMEOS)
 const char kPlatform[] = "platform";
+#endif
+#if !defined(OS_IOS)
 const char kProfilePath[] = "profile_path";
 const char kProfilePathName[] = "profile_path_name";
+#endif
 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