Revert of Switch Blink SkShader clients to sk_sp

third_party/WebKit/Source/platform/graphics/Gradient.h

Index: third_party/WebKit/Source/platform/graphics/Gradient.h
diff --git a/third_party/WebKit/Source/platform/graphics/Gradient.h b/third_party/WebKit/Source/platform/graphics/Gradient.h
index 0a43ecb364333810374df26ec320335a6c24179a..49e0f740ab84df171045dfcd1c74eab573fa7e70 100644
--- a/third_party/WebKit/Source/platform/graphics/Gradient.h
+++ b/third_party/WebKit/Source/platform/graphics/Gradient.h
@@ -34,10 +34,10 @@
 #include "platform/graphics/Color.h"
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/transforms/AffineTransform.h"
-#include "third_party/skia/include/core/SkRefCnt.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
+#include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 class SkPaint;
@@ -126,7 +126,7 @@
     Gradient(const FloatPoint& p0, const FloatPoint& p1);
     Gradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1, float aspectRatio);
 
-    sk_sp<SkShader> shader();
+    SkShader* shader();
     void destroyShader();
 
     void sortStopsIfNecessary();
@@ -143,7 +143,7 @@
     GradientSpreadMethod m_spreadMethod;
     AffineTransform m_gradientSpaceTransformation;
 
-    sk_sp<SkShader> m_gradient;
+    RefPtr<SkShader> m_gradient;
 };
 
 } // namespace blink