Bug 1417411 - Invalidate nsDisplayPerspective items when the inner transform frame changes. r=miko

layout/painting/nsDisplayList.h

@@ -6220,6 +6220,8 @@ public:
 
   nsIFrame* TransformFrame() { return mTransformFrame; }
 
+  virtual nsIFrame* FrameForInvalidation() const override { return mTransformFrame; }
+
   virtual int32_t ZIndex() const override;
 
   virtual void