Skip paint property update and visual rect update if no geometry change

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 9a608ea2d0aa84af160a63d7440a00ca320aed39..da6f838908e64a21e795e95f3ade4b89d4c15d47 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -3145,6 +3145,8 @@ void FrameView::prePaint() {
       // we need to propagate the flags into the ancestor chain so that
       // PrePaintTreeWalk can reach this frame.
       frameView.setNeedsPaintPropertyUpdate();
+      if (auto owner = frameView.frame().ownerLayoutItem())
+        owner.setMayNeedPaintInvalidation();
     }
   });
 
@@ -4970,6 +4972,8 @@ void FrameView::beginLifecycleUpdates() {
   if (!frame().loader().stateMachine()->committedFirstRealDocumentLoad())
     return;
   m_lifecycleUpdatesThrottled = false;
+  if (auto owner = frame().ownerLayoutItem())
+    owner.setMayNeedPaintInvalidation();
   setupRenderThrottling();
   updateRenderThrottlingStatus(m_hiddenForThrottling, m_subtreeThrottled);
   // The compositor will "defer commits" for the main frame until we