Use SkLayerDrawLooper::Builder to construct SkLayerDrawLooper.

Source/platform/graphics/GraphicsContextState.cpp

Index: Source/platform/graphics/GraphicsContextState.cpp
diff --git a/Source/platform/graphics/GraphicsContextState.cpp b/Source/platform/graphics/GraphicsContextState.cpp
index e55810458e1fd87cf38acf1c38b27ff33a1f64e7..d4af47aaa6750f3fe7270a36425103ae46c706bc 100644
--- a/Source/platform/graphics/GraphicsContextState.cpp
+++ b/Source/platform/graphics/GraphicsContextState.cpp
@@ -188,9 +188,9 @@ void GraphicsContextState::clearFillPattern()
 }
 
 // Shadow. (This will need tweaking if we use draw loopers for other things.)
-void GraphicsContextState::setDrawLooper(const DrawLooper& drawLooper)
+void GraphicsContextState::setDrawLooper(PassRefPtr<SkDrawLooper> drawLooper)
 {
-    m_looper = drawLooper.skDrawLooper();
+    m_looper = drawLooper;
     m_strokePaint.setLooper(m_looper.get());
     m_fillPaint.setLooper(m_looper.get());
 }