diff -up firefox-101.0.1/gfx/webrender_bindings/webrender_ffi.h.old firefox-101.0.1/gfx/webrender_bindings/webrender_ffi.h
--- firefox-101.0.1/gfx/webrender_bindings/webrender_ffi.h.old	2022-06-09 10:31:16.122495733 +0200
+++ firefox-101.0.1/gfx/webrender_bindings/webrender_ffi.h	2022-06-09 10:31:22.880724352 +0200
@@ -72,8 +72,6 @@ struct WrPipelineInfo;
 struct WrPipelineIdAndEpoch;
 using WrPipelineIdEpochs = nsTArray<WrPipelineIdAndEpoch>;
 
-const uint64_t ROOT_CLIP_CHAIN = ~0;
-
 }  // namespace wr
 }  // namespace mozilla