Remove will-change: contents GPU rasterization hint

Source/core/rendering/RenderLayer.h

Index: Source/core/rendering/RenderLayer.h
diff --git a/Source/core/rendering/RenderLayer.h b/Source/core/rendering/RenderLayer.h
index cfe5ed9699d045f2e741b7b178f9f2399a73aa75..814e35ab0d660401a49f5b050cba8491c0d544b5 100644
--- a/Source/core/rendering/RenderLayer.h
+++ b/Source/core/rendering/RenderLayer.h
@@ -495,9 +495,6 @@ public:
     bool shouldIsolateCompositedDescendants() const { ASSERT(isAllowedToQueryCompositingState()); return m_shouldIsolateCompositedDescendants; }
     void setShouldIsolateCompositedDescendants(bool b)  { m_shouldIsolateCompositedDescendants = b; }
 
-    bool suppressingCompositedLayerCreation() const { ASSERT(isAllowedToQueryCompositingState()); return m_suppressingCompositedLayerCreation; }
-    void setSuppressingCompositedLayerCreation(bool b) { m_suppressingCompositedLayerCreation = b; }
-
     void updateDescendantDependentFlags();
 
     void updateOrRemoveFilterEffectRenderer();
@@ -701,9 +698,6 @@ private:
     // and we don't yet know to what graphics layer this RenderLayer will be assigned.
     unsigned m_lostGroupedMapping : 1;
 
-    // Whether this render layer is trying to avoid becoming composited, if possible.
-    unsigned m_suppressingCompositedLayerCreation : 1;
-
     // The reason, if any exists, that a fixed-position layer is chosen not to be composited.
     unsigned m_viewportConstrainedNotCompositedReason : ViewportConstrainedNotCompositedReasonBits;