--- a/gfx/layers/wr/ScrollingLayersHelper.cpp
+++ b/gfx/layers/wr/ScrollingLayersHelper.cpp
@@ -11,16 +11,17 @@
 #include "mozilla/layers/StackingContextHelper.h"
 #include "mozilla/layers/WebRenderLayerManager.h"
 #include "mozilla/webrender/WebRenderAPI.h"
 #include "nsDisplayList.h"
 #include "UnitTransforms.h"
 
 #define SLH_LOG(...)
 //#define SLH_LOG(...) printf_stderr("SLH: " __VA_ARGS__)
+//#define SLH_LOG(...) if (XRE_IsContentProcess()) printf_stderr("SLH: " __VA_ARGS__)
 
 namespace mozilla {
 namespace layers {
 
 ScrollingLayersHelper::ScrollingLayersHelper()
   : mManager(nullptr)
   , mBuilder(nullptr)
 {

--- a/gfx/webrender_bindings/WebRenderAPI.cpp
+++ b/gfx/webrender_bindings/WebRenderAPI.cpp
@@ -10,16 +10,17 @@
 #include "mozilla/webrender/RendererOGL.h"
 #include "mozilla/gfx/gfxVars.h"
 #include "mozilla/layers/CompositorThread.h"
 #include "mozilla/widget/CompositorWidget.h"
 #include "mozilla/layers/SynchronousTask.h"
 
 #define WRDL_LOG(...)
 //#define WRDL_LOG(...) printf_stderr("WRDL(%p): " __VA_ARGS__)
+//#define WRDL_LOG(...) if (XRE_IsContentProcess()) printf_stderr("WRDL(%p): " __VA_ARGS__)
 
 namespace mozilla {
 namespace wr {
 
 using layers::Stringify;
 
 class NewRenderer : public RendererEvent
 {

--- a/layout/painting/DisplayItemClipChain.cpp
+++ b/layout/painting/DisplayItemClipChain.cpp
@@ -34,20 +34,19 @@ DisplayItemClipChain::Equal(const Displa
 }
 
 /* static */ nsCString
 DisplayItemClipChain::ToString(const DisplayItemClipChain* aClipChain)
 {
   nsAutoCString str;
   for (auto* sc = aClipChain; sc; sc = sc->mParent) {
     if (sc->mASR) {
-      str.AppendPrintf("<%s> [0x%p]", sc->mClip.ToString().get(), sc->mASR->mScrollableFrame);
-
+      str.AppendPrintf("0x%p <%s> [0x%p]", sc, sc->mClip.ToString().get(), sc->mASR->mScrollableFrame);
     } else {
-      str.AppendPrintf("<%s> [root asr]", sc->mClip.ToString().get());
+      str.AppendPrintf("0x%p <%s> [root asr]", sc, sc->mClip.ToString().get());
     }
     if (sc->mParent) {
       str.AppendLiteral(", ");
     }
   }
   return str;
 }