Get rid of the full invalidation bool on FrameView.

sky/engine/core/frame/FrameView.h

Index: sky/engine/core/frame/FrameView.h
diff --git a/sky/engine/core/frame/FrameView.h b/sky/engine/core/frame/FrameView.h
index 9ab42d7071ee9ac6cc5155bf94b68fa90bf4910c..dcba5692531cad95c7d9e8cbf82b8d75cda343ce 100644
--- a/sky/engine/core/frame/FrameView.h
+++ b/sky/engine/core/frame/FrameView.h
@@ -101,8 +101,6 @@ public:
     void setLayoutSizeFixedToFrameSize(bool isFixed) { m_layoutSizeFixedToFrameSize = isFixed; }
     bool layoutSizeFixedToFrameSize() { return m_layoutSizeFixedToFrameSize; }
 
-    bool needsFullPaintInvalidation() const { return m_doFullPaintInvalidation; }
-
     void recalcOverflowAfterStyleChange();
 
     bool isEnclosedInCompositingLayer() const;
@@ -243,8 +241,6 @@ private:
 
     RefPtr<LocalFrame> m_frame;
 
-    bool m_doFullPaintInvalidation;
-
     bool m_hasPendingLayout;
     RenderObject* m_layoutSubtreeRoot;