Coalesce more hardcoded schemes to using predefined constants.

chrome/browser/extensions/user_script_master.cc

 // Copyright (c) 2008 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 "chrome/browser/extensions/user_script_master.h"
 
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/pickle.h"
 #include "base/string_util.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/stl_util-inl.h"
+#include "chrome/common/url_constants.h"
 #include "net/base/net_util.h"
 
-// Defined in extension.h.
-extern const char kExtensionURLScheme[];
-extern const char kUserScriptURLScheme[];
-
 // static
 bool GetDeclarationValue(const StringPiece& line, const StringPiece& prefix,
                          std::string* value) {
   if (!line.starts_with(prefix))
     return false;
 
   std::string temp(line.data() + prefix.length(),
                    line.length() - prefix.length());
   TrimWhitespace(temp, TRIM_ALL, value);
   return true;
@@ skipping 118 matching lines @@
     if (!file_util::DirectoryExists(script_dir))
       file_util::CreateDirectory(script_dir);
 
     file_util::FileEnumerator enumerator(script_dir, false,
                                          file_util::FileEnumerator::FILES,
                                          FILE_PATH_LITERAL("*.user.js"));
     for (FilePath file = enumerator.Next(); !file.value().empty();
          file = enumerator.Next()) {
       all_scripts.push_back(UserScript());
       UserScript& info = all_scripts.back();
-      info.set_url(GURL(std::string(kUserScriptURLScheme) + ":/" + 
+      info.set_url(GURL(std::string(chrome::kUserScriptScheme) + ":/" + 
           net::FilePathToFileURL(file.ToWStringHack()).ExtractFileName()));
       info.set_path(file);
     }
   }
 
   if (all_scripts.empty() && lone_scripts.empty())
     return NULL;
 
   // Add all the lone scripts.
   all_scripts.insert(all_scripts.end(), lone_scripts.begin(),
@@ skipping 102 matching lines @@
 
   StartScan();
 }
 
 void UserScriptMaster::StartScan() {
   if (!script_reloader_)
     script_reloader_ = new ScriptReloader(this);
 
   script_reloader_->StartScan(worker_loop_, user_script_dir_, lone_scripts_);
 }