Move code in components/safe_browsing_db and chrome/browser/s_b/ under the safe_browsing namespace.

chrome/browser/safe_browsing/remote_database_manager.h

 // 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.
 //
 // Implementation of the SafeBrowsingDatabaseManager that sends URLs
 // via IPC to a database that chromium doesn't manage locally.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_REMOTE_DATABASE_MANAGER_H_
 #define CHROME_BROWSER_SAFE_BROWSING_REMOTE_DATABASE_MANAGER_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/safe_browsing/database_manager.h"
 #include "url/gurl.h"
 
+namespace safe_browsing {
+
 // An implementation that proxies requests to a service outside of Chromium.
 // Does not manage a local database.
 class RemoteSafeBrowsingDatabaseManager : public SafeBrowsingDatabaseManager {
  public:
   // Construct RemoteSafeBrowsingDatabaseManager.
   // Must be initialized by calling StartOnIOThread() before using.
   RemoteSafeBrowsingDatabaseManager();
 
   //
   // SafeBrowsingDatabaseManager implementation
@@ skipping 35 matching lines @@
   std::vector<ClientRequest*> current_requests_;
   bool enabled_;
 
   std::set<content::ResourceType> resource_types_to_check_;
   bool is_android_field_trial_enabled_;
 
   friend class base::RefCountedThreadSafe<RemoteSafeBrowsingDatabaseManager>;
   DISALLOW_COPY_AND_ASSIGN(RemoteSafeBrowsingDatabaseManager);
 };  // class RemoteSafeBrowsingDatabaseManager
 
+}  // namespace safe_browsing
+
 #endif  // CHROME_BROWSER_SAFE_BROWSING_REMOTE_DATABASE_MANAGER_H_