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

Source/web/PageScaleConstraintsSet.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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "web/PageScaleConstraintsSet.h"
 
 #include "platform/Length.h"
 #include "wtf/Assertions.h"
 
-using namespace blink;
-
 namespace blink {
 
 static const float defaultMinimumScale = 0.25f;
 static const float defaultMaximumScale = 5.0f;
 
 PageScaleConstraintsSet::PageScaleConstraintsSet()
     : m_lastContentsWidth(0)
     , m_needsReset(false)
     , m_constraintsDirty(false)
 {
@@ skipping 179 matching lines @@
             adjustedLayoutSizeWidth = m_viewSize.width() / targetDensityDPIFactor;
             adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, m_viewSize);
         }
     }
 
     m_pageDefinedConstraints.layoutSize.setWidth(adjustedLayoutSizeWidth);
     m_pageDefinedConstraints.layoutSize.setHeight(adjustedLayoutSizeHeight);
 }
 
 } // namespace blink