Throttle rendering pipeline for invisible iframes

Source/core/paint/DisplayItemListPaintTest.cpp

Index: Source/core/paint/DisplayItemListPaintTest.cpp
diff --git a/Source/core/paint/DisplayItemListPaintTest.cpp b/Source/core/paint/DisplayItemListPaintTest.cpp
index 675ea5ffb27eea969c2ccf295e7789ae21b5330d..04840dca994bbc7d1b6957bf3d0a9ff6e14e15f9 100644
--- a/Source/core/paint/DisplayItemListPaintTest.cpp
+++ b/Source/core/paint/DisplayItemListPaintTest.cpp
@@ -70,7 +70,7 @@ protected:
     // Expose some document lifecycle steps for checking new display items before commiting.
     void updateLifecyclePhasesToPaintForSlimmingPaintV2Clean()
     {
-        document().view()->updateLifecyclePhasesInternal(FrameView::OnlyUpToCompositingCleanPlusScrolling);
+        document().view()->updateLifecyclePhasesInternal(FrameView::OnlyUpToCompositingCleanPlusScrolling, FrameView::LifecycleThrottlingMode::Disallow);
         document().view()->invalidateTreeIfNeededRecursive();
         document().view()->paintForSlimmingPaintV2();
     }