Change (Pass)RefPtr<SkXxx> into sk_sp<SkXxx>.

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2DState.cpp

 // Copyright 2015 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 "modules/canvas2d/CanvasRenderingContext2DState.h"
 
 #include "core/css/CSSFontSelector.h"
 #include "core/css/resolver/FilterOperationResolver.h"
 #include "core/css/resolver/StyleBuilder.h"
 #include "core/css/resolver/StyleResolverState.h"
@@ skipping 381 matching lines @@
 {
     if (!m_shadowAndForegroundImageFilter) {
         double sigma = skBlurRadiusToSigma(m_shadowBlur);
         m_shadowAndForegroundImageFilter = SkDropShadowImageFilter::Make(m_shadowOffset.width(), m_shadowOffset.height(), sigma, sigma, m_shadowColor, SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr);
     }
     return m_shadowAndForegroundImageFilter.get();
 }
 
 void CanvasRenderingContext2DState::shadowParameterChanged()
 {
-    m_shadowOnlyDrawLooper.clear();
-    m_shadowAndForegroundDrawLooper.clear();
+    m_shadowOnlyDrawLooper.reset();
+    m_shadowAndForegroundDrawLooper.reset();
     m_shadowOnlyImageFilter.reset();
     m_shadowAndForegroundImageFilter.reset();
 }
 
 void CanvasRenderingContext2DState::setShadowOffsetX(double x)
 {
     m_shadowOffset.setWidth(x);
     shadowParameterChanged();
 }
 
@@ skipping 148 matching lines @@
         paint->setLooper(0);
         paint->setImageFilter(shadowAndForegroundImageFilter());
         return paint;
     }
     paint->setLooper(sk_ref_sp(shadowAndForegroundDrawLooper()));
     paint->setImageFilter(0);
     return paint;
 }
 
 } // namespace blink