Clean up chrome://version page.

components/version_ui/version_ui_constants.cc

Index: components/version_ui/version_ui_constants.cc
diff --git a/components/version_ui/version_ui_constants.cc b/components/version_ui/version_ui_constants.cc
index 5c4e824fc62f9b1966c9d5856bd4ec4b9015597a..d16045deee4c38f83026d4bddf452079723d6e22 100644
--- a/components/version_ui/version_ui_constants.cc
+++ b/components/version_ui/version_ui_constants.cc
@@ -18,28 +18,47 @@ 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";