Cleanup namespace usage in platform/graphics/[filters/* to skia/*] and platform/graphics/[B-D]*

Source/platform/graphics/gpu/Extensions3DUtil.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 
 #include "public/platform/WebGraphicsContext3D.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
 namespace {
 
 void splitStringHelper(const String& str, HashSet<String>& set)
 {
     Vector<String> substrings;
     str.split(' ', substrings);
     for (size_t i = 0; i < substrings.size(); ++i)
         set.add(substrings[i]);
 }
 
 } // anonymous namespace
 
-PassOwnPtr<Extensions3DUtil> Extensions3DUtil::create(blink::WebGraphicsContext3D* context)
+PassOwnPtr<Extensions3DUtil> Extensions3DUtil::create(WebGraphicsContext3D* context)
 {
     OwnPtr<Extensions3DUtil> out = adoptPtr(new Extensions3DUtil(context));
     if (!out->initializeExtensions())
         return nullptr;
     return out.release();
 }
 
-Extensions3DUtil::Extensions3DUtil(blink::WebGraphicsContext3D* context)
+Extensions3DUtil::Extensions3DUtil(WebGraphicsContext3D* context)
     : m_context(context)
 {
 }
 
 Extensions3DUtil::~Extensions3DUtil()
 {
 }
 
 bool Extensions3DUtil::initializeExtensions()
 {
@@ skipping 47 matching lines @@
     // FIXME: restriction of (RGB || RGBA)/UNSIGNED_BYTE/(Level 0) should be lifted when
     // WebGraphicsContext3D::copyTextureCHROMIUM(...) are fully functional.
     if ((destFormat == GL_RGB || destFormat == GL_RGBA)
         && destType == GL_UNSIGNED_BYTE
         && !level)
         return true;
     return false;
 }
 
 } // namespace blink