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

Source/web/ValidationMessageClientImpl.cpp

 /*
  * Copyright (C) 2012 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 19 matching lines @@
 #include "core/frame/FrameView.h"
 #include "core/rendering/RenderObject.h"
 #include "platform/HostWindow.h"
 #include "public/platform/WebRect.h"
 #include "public/platform/WebString.h"
 #include "public/web/WebTextDirection.h"
 #include "public/web/WebViewClient.h"
 #include "web/WebViewImpl.h"
 #include "wtf/CurrentTime.h"
 
-using namespace blink;
-
 namespace blink {
 
 ValidationMessageClientImpl::ValidationMessageClientImpl(WebViewImpl& webView)
     : m_webView(webView)
     , m_currentAnchor(nullptr)
     , m_lastPageScaleFactor(1)
     , m_finishTime(0)
     , m_timer(this, &ValidationMessageClientImpl::checkAnchorStatus)
 {
 }
@@ skipping 93 matching lines @@
     if (m_currentAnchor)
         hideValidationMessage(*m_currentAnchor);
 }
 
 void ValidationMessageClientImpl::trace(Visitor* visitor)
 {
     visitor->trace(m_currentAnchor);
     ValidationMessageClient::trace(visitor);
 }
 
-}
+} // namespace blink