Move all clip display item parameters to the constructor

Source/platform/graphics/paint/ClipDisplayItem.cpp

Index: Source/platform/graphics/paint/ClipDisplayItem.cpp
diff --git a/Source/platform/graphics/paint/ClipDisplayItem.cpp b/Source/platform/graphics/paint/ClipDisplayItem.cpp
index 55293b6f755147d2f975a4c9a5b664ba37657860..c992dc3a821cb032819e0c7bddf4ea0fe1540cd9 100644
--- a/Source/platform/graphics/paint/ClipDisplayItem.cpp
+++ b/Source/platform/graphics/paint/ClipDisplayItem.cpp
@@ -16,15 +16,26 @@ void ClipDisplayItem::replay(GraphicsContext& context)
 {
     context.save();
     context.clipRect(m_clipRect, NotAntiAliased, SkRegion::kIntersect_Op);
-    for (FloatRoundedRect roundedRect : m_roundedRectClips)
+
+    if (!m_roundedRectClips)
+        return;
+
+    for (const FloatRoundedRect& roundedRect : *m_roundedRectClips)
         context.clipRoundedRect(roundedRect, SkRegion::kIntersect_Op);
 }
 
 void ClipDisplayItem::appendToWebDisplayItemList(WebDisplayItemList* list) const
 {
-    WebVector<SkRRect> webRoundedRects(m_roundedRectClips.size());
-    for (size_t i = 0; i < m_roundedRectClips.size(); ++i) {
-        FloatRoundedRect::Radii rectRadii = m_roundedRectClips[i].radii();
+    if (!m_roundedRectClips) {
+        WebVector<SkRRect> webRoundedRects;
+        list->appendClipItem(m_clipRect, webRoundedRects);
+        return;
+    }
+
+    Vector<FloatRoundedRect>& roundedRects = *m_roundedRectClips;
+    WebVector<SkRRect> webRoundedRects(roundedRects.size());
+    for (size_t i = 0; i < roundedRects.size(); ++i) {
+        FloatRoundedRect::Radii rectRadii = roundedRects[i].radii();
         SkVector skRadii[4];
         skRadii[SkRRect::kUpperLeft_Corner].set(SkIntToScalar(rectRadii.topLeft().width()),
             SkIntToScalar(rectRadii.topLeft().height()));
@@ -35,7 +46,7 @@ void ClipDisplayItem::appendToWebDisplayItemList(WebDisplayItemList* list) const
         skRadii[SkRRect::kLowerLeft_Corner].set(SkIntToScalar(rectRadii.bottomLeft().width()),
             SkIntToScalar(rectRadii.bottomLeft().height()));
         SkRRect skRoundedRect;
-        skRoundedRect.setRectRadii(m_roundedRectClips[i].rect(), skRadii);
+        skRoundedRect.setRectRadii(roundedRects[i].rect(), skRadii);
         webRoundedRects[i] = skRoundedRect;
     }
     list->appendClipItem(m_clipRect, webRoundedRects);