Move about://-related constants from //content to //url

chrome/browser/history/in_memory_url_index.cc

 // Copyright (c) 2012 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/history/in_memory_url_index.h"
 
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
@@ skipping 20 matching lines @@
 void DeleteCacheFile(const base::FilePath& path) {
   DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   base::DeleteFile(path, false);
 }
 
 // Initializes a whitelist of URL schemes.
 void InitializeSchemeWhitelist(std::set<std::string>* whitelist) {
   DCHECK(whitelist);
   if (!whitelist->empty())
     return;  // Nothing to do, already initialized.
-  whitelist->insert(std::string(content::kAboutScheme));
+  whitelist->insert(std::string(url::kAboutScheme));
   whitelist->insert(std::string(content::kChromeUIScheme));
   whitelist->insert(std::string(url::kFileScheme));
   whitelist->insert(std::string(url::kFtpScheme));
   whitelist->insert(std::string(url::kHttpScheme));
   whitelist->insert(std::string(url::kHttpsScheme));
   whitelist->insert(std::string(url::kMailToScheme));
 }
 
 // Restore/SaveCacheObserver ---------------------------------------------------
 
@@ skipping 291 matching lines @@
         base::Bind(DeleteCacheFile, path));
   }
 }
 
 void InMemoryURLIndex::OnCacheSaveDone(bool succeeded) {
   if (save_cache_observer_)
     save_cache_observer_->OnCacheSaveFinished(succeeded);
 }
 
 }  // namespace history