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

chrome/browser/safe_browsing/database_manager.h

 // 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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_DATABASE_MANAGER_H_
 #define CHROME_BROWSER_SAFE_BROWSING_DATABASE_MANAGER_H_
 
 #include <deque>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "components/safe_browsing_db/util.h"
 #include "content/public/common/resource_type.h"
 #include "url/gurl.h"
 
+namespace safe_browsing {
+
 // Interface to either the locally-managed or a remotely-managed database.
 class SafeBrowsingDatabaseManager
     : public base::RefCountedThreadSafe<SafeBrowsingDatabaseManager> {
  public:
   // Callers requesting a result should derive from this class.
   // The destructor should call db_manager->CancelCheck(client) if a
   // request is still pending.
   class Client {
    public:
     virtual ~Client() {}
@@ skipping 95 matching lines @@
   // multiple times during the life of the DatabaseManager. Must be called
   // on IO thread. If shutdown is true, the manager is disabled permanently.
   virtual void StopOnIOThread(bool shutdown) = 0;
 
  protected:
   virtual ~SafeBrowsingDatabaseManager() {}
 
   friend class base::RefCountedThreadSafe<SafeBrowsingDatabaseManager>;
 };  // class SafeBrowsingDatabaseManager
 
+}  // namespace safe_browsing
+
 #endif  // CHROME_BROWSER_SAFE_BROWSING_DATABASE_MANAGER_H_