Cleanup namespace usage in Source/web[A-V]*.cpp

Source/web/DatabaseClientImpl.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #include "config.h"
 #include "web/DatabaseClientImpl.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "public/web/WebPermissionClient.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WorkerPermissionClient.h"
 
-using namespace blink;
-
 namespace blink {
 
 PassOwnPtrWillBeRawPtr<DatabaseClientImpl> DatabaseClientImpl::create()
 {
     return adoptPtrWillBeNoop(new DatabaseClientImpl());
 }
 
 DatabaseClientImpl::~DatabaseClientImpl()
 {
 }
@@ skipping 14 matching lines @@
         return WorkerPermissionClient::from(workerGlobalScope)->allowDatabase(name, displayName, estimatedSize);
     }
     return true;
 }
 
 DatabaseClientImpl::DatabaseClientImpl()
 {
 }
 
 } // namespace blink