Convert SkLayerDrawLooper::addLayerOnTop calls to use addLayer instead

third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp

Index: third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp b/third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp
index 42bdc7b80f465091f0ef3009b7b5a6a4bb0f6a89..f24e4c6c164f85b66e1a5f88eb309e2c5bca75bd 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp
@@ -214,10 +214,10 @@ void GraphicsContext::setShadow(const FloatSize& offset, float blur, const Color
         return;
     }
 
-    drawLooperBuilder->addShadow(offset, blur, color, shadowTransformMode, shadowAlphaMode);
     if (shadowMode == DrawShadowAndForeground) {
         drawLooperBuilder->addUnmodifiedContent();
     }
+    drawLooperBuilder->addShadow(offset, blur, color, shadowTransformMode, shadowAlphaMode);
     setDrawLooper(drawLooperBuilder.release());
 }