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

Source/web/ViewportAnchor.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 18 matching lines @@
  */
 
 #include "config.h"
 #include "web/ViewportAnchor.h"
 
 #include "core/dom/ContainerNode.h"
 #include "core/dom/Node.h"
 #include "core/page/EventHandler.h"
 #include "core/rendering/HitTestResult.h"
 
-using namespace blink;
-
 namespace blink {
 
 namespace {
 
 static const float viewportAnchorRelativeEpsilon = 0.1f;
 static const int viewportToNodeMaxRelativeArea = 2;
 
 template <typename RectType>
 int area(const RectType& rect) {
     return rect.width() * rect.height();
@@ skipping 67 matching lines @@
     anchorOffsetFromNode.scale(m_anchorInNodeCoords.width(), m_anchorInNodeCoords.height());
     FloatPoint anchorPoint = currentNodeBounds.location() + anchorOffsetFromNode;
 
     // Compute the new origin point relative to the new anchor point
     FloatSize anchorOffsetFromOrigin = currentViewSize;
     anchorOffsetFromOrigin.scale(m_anchorInViewCoords.width(), m_anchorInViewCoords.height());
     return flooredIntPoint(anchorPoint - anchorOffsetFromOrigin);
 }
 
 } // namespace blink