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

Source/web/ScrollbarGroup.cpp

 /*
  * Copyright (C) 2011 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
@@ skipping 14 matching lines @@
 
 #include "config.h"
 #include "web/ScrollbarGroup.h"
 
 #include "core/frame/FrameView.h"
 #include "platform/scroll/Scrollbar.h"
 #include "platform/scroll/ScrollbarTheme.h"
 #include "public/platform/WebRect.h"
 #include "web/WebPluginScrollbarImpl.h"
 
-using namespace blink;
-
 namespace blink {
 
 ScrollbarGroup::ScrollbarGroup(FrameView* frameView, const IntRect& frameRect)
     : m_frameView(frameView)
     , m_frameRect(frameRect)
     , m_horizontalScrollbar(0)
     , m_verticalScrollbar(0)
 {
 }
 
@@ skipping 37 matching lines @@
         m_frameView->removeScrollableArea(this);
         m_frameView->setNeedsLayout();
     }
 }
 
 void ScrollbarGroup::setLastMousePosition(const IntPoint& point)
 {
     m_lastMousePosition = point;
 }
 
-int ScrollbarGroup::scrollSize(blink::ScrollbarOrientation orientation) const
+int ScrollbarGroup::scrollSize(ScrollbarOrientation orientation) const
 {
     WebPluginScrollbarImpl* webScrollbar = orientation == HorizontalScrollbar ? m_horizontalScrollbar : m_verticalScrollbar;
     if (!webScrollbar)
         return 0;
     Scrollbar* scrollbar = webScrollbar->scrollbar();
     return scrollbar->totalSize() - scrollbar->visibleSize();
 }
 
 void ScrollbarGroup::setScrollOffset(const IntPoint& offset)
 {
@@ skipping 172 matching lines @@
     }
 
     int pageStep = std::max(
         static_cast<int>(static_cast<float>(length) * ScrollableArea::minFractionToStepWhenPaging()),
         length - ScrollableArea::maxOverlapBetweenPages());
 
     return std::max(pageStep, 1);
 }
 
 } // namespace blink