[SPv2] Disable CompositingRecorder collapsing for SPv2

third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp

Index: third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp b/third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp
index 7930f26670f9003dd853b62b7e35205c4f48b8a7..2a2d3a86e97906495a355faea6f943d14b7dfc31 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/CompositingRecorder.cpp
@@ -52,8 +52,8 @@ void CompositingRecorder::endCompositing(GraphicsContext& graphicsContext,
   const DisplayItem* lastDisplayItem = paintController.lastDisplayItem(0);
   const DisplayItem* secondToLastDisplayItem =
       paintController.lastDisplayItem(1);
-  if (lastDisplayItem && secondToLastDisplayItem &&
-      lastDisplayItem->drawsContent() &&
+  if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled() && lastDisplayItem &&
+      secondToLastDisplayItem && lastDisplayItem->drawsContent() &&
       secondToLastDisplayItem->getType() == DisplayItem::kBeginCompositing) {
     FloatRect cullRect(
         ((DrawingDisplayItem*)lastDisplayItem)->picture()->cullRect());