Defer updateCompositingRequirementsState until the compositing update

Source/core/rendering/compositing/RenderLayerCompositor.cpp

Index: Source/core/rendering/compositing/RenderLayerCompositor.cpp
diff --git a/Source/core/rendering/compositing/RenderLayerCompositor.cpp b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
index 8623783bd1617f73d48b48b935415734c0a1a273..0268a56d17fc3ce0922f53337b55aa8b6535ddf2 100644
--- a/Source/core/rendering/compositing/RenderLayerCompositor.cpp
+++ b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
@@ -358,6 +358,14 @@ void RenderLayerCompositor::updateIfNeeded()
     if (m_forceCompositingMode && !m_compositing)
         enableCompositingMode(true);
 
+    {
+        // Notice that we call this function before checking the dirty bits below.
+        // We'll need to remove DeprecatedDirtyCompositingDuringCompositingUpdate
+        // before moving this function after checking the dirty bits.
+        DeprecatedDirtyCompositingDuringCompositingUpdate marker(lifecycle());
+        updateCompositingRequirementsState();
+    }
+
     if (!m_needsToRecomputeCompositingRequirements && !m_compositing)
         return;