Update Source/platform/ to assume Oilpan only.

third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.cpp

 // Copyright 2016 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 "platform/graphics/filters/PaintFilterEffect.h"
 
 #include "platform/graphics/filters/Filter.h"
 #include "platform/text/TextStream.h"
 #include "third_party/skia/include/effects/SkPaintImageFilter.h"
 
 namespace blink {
 
 PaintFilterEffect::PaintFilterEffect(Filter* filter, const SkPaint& paint)
     : FilterEffect(filter)
     , m_paint(paint)
 {
     setOperatingColorSpace(ColorSpaceDeviceRGB);
 }
 
 PaintFilterEffect::~PaintFilterEffect()
 {
 }
 
-RawPtr<PaintFilterEffect> PaintFilterEffect::create(Filter* filter, const SkPaint& paint)
+PaintFilterEffect* PaintFilterEffect::create(Filter* filter, const SkPaint& paint)
 {
     return new PaintFilterEffect(filter, paint);
 }
 
 PassRefPtr<SkImageFilter> PaintFilterEffect::createImageFilter(SkiaImageFilterBuilder&)
 {
     return adoptRef(SkPaintImageFilter::Create(m_paint, nullptr));
 }
 
 TextStream& PaintFilterEffect::externalRepresentation(TextStream& ts, int indent) const
 {
     writeIndent(ts, indent);
     ts << "[PaintFilterEffect]\n";
     return ts;
 }
 
 } // namespace blink