Cleanup namespace usage in Source/core/rendering

Source/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 1176 matching lines @@
         context->save();
         LayoutRect clipRect = paintingExtent(rootLayer, paintDirtyRect, subPixelAccumulation, paintBehavior);
         context->clip(clipRect);
 
         if (paintsWithBlendMode())
             context->setCompositeOperation(context->compositeOperation(), m_renderer->style()->blendMode());
 
         context->beginTransparencyLayer(renderer()->opacity());
 
         if (paintsWithBlendMode())
-            context->setCompositeOperation(context->compositeOperation(), blink::WebBlendModeNormal);
+            context->setCompositeOperation(context->compositeOperation(), WebBlendModeNormal);
 #ifdef REVEAL_TRANSPARENCY_LAYERS
         context->setFillColor(Color(0.0f, 0.0f, 0.5f, 0.2f));
         context->fillRect(clipRect);
 #endif
     }
 }
 
 void* RenderLayer::operator new(size_t sz)
 {
     return partitionAlloc(Partitions::getRenderingPartition(), sz);
@@ skipping 2478 matching lines @@
     }
 }
 
 void showLayerTree(const blink::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif