Define kValidUserScriptSchemes in the .h file so that it can be

chrome/common/extensions/user_script.cc

Index: chrome/common/extensions/user_script.cc
diff --git a/chrome/common/extensions/user_script.cc b/chrome/common/extensions/user_script.cc
index ca86b9224157dc88d641634e40860b89dee199b5..ca28252b930c211d87b0a761a66465b328232836 100644
--- a/chrome/common/extensions/user_script.cc
+++ b/chrome/common/extensions/user_script.cc
@@ -25,11 +25,6 @@ bool UrlMatchesGlobs(const std::vector<std::string>* globs,
 // static
 const char UserScript::kFileExtension[] = ".user.js";
 
-// static
-const int UserScript::kValidUserScriptSchemes =
-    URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS |
-    URLPattern::SCHEME_FILE | URLPattern::SCHEME_FTP;
-
 bool UserScript::IsURLUserScript(const GURL& url,
                                  const std::string& mime_type) {
   return EndsWith(url.ExtractFileName(), kFileExtension, false) &&