diff --git a/gfx/layers/Layers.cpp b/gfx/layers/Layers.cpp
index d622b01a5e9..35b2b4f8063 100644
--- a/gfx/layers/Layers.cpp
+++ b/gfx/layers/Layers.cpp
@@ -291,12 +291,12 @@ LayerManager::Dump(FILE* aFile, const char* aPrefix)
 
   nsCAutoString pfx(aPrefix);
   pfx += "  ";
-  if (!mRoot) {
+  if (!GetRoot()) {
     fprintf(file, "%s(null)", pfx.get());
     return;
   }
 
-  mRoot->Dump(file, pfx.get());
+  GetRoot()->Dump(file, pfx.get());
 }
 
 void
@@ -317,12 +317,12 @@ LayerManager::Log(const char* aPrefix)
 
   nsCAutoString pfx(aPrefix);
   pfx += "  ";
-  if (!mRoot) {
+  if (!GetRoot()) {
     MOZ_LAYERS_LOG(("%s(null)", pfx.get()));
     return;
   }
 
-  mRoot->Log(pfx.get());
+  GetRoot()->Log(pfx.get());
 }
 
 void
diff --git a/gfx/layers/d3d9/LayerManagerD3D9.cpp b/gfx/layers/d3d9/LayerManagerD3D9.cpp
index 1ba30089bc6..130c5ac57a3 100644
--- a/gfx/layers/d3d9/LayerManagerD3D9.cpp
+++ b/gfx/layers/d3d9/LayerManagerD3D9.cpp
@@ -137,7 +137,7 @@ LayerManagerD3D9::EndTransaction(DrawThebesLayerCallback aCallback,
 void
 LayerManagerD3D9::SetRoot(Layer *aLayer)
 {
-  mRootLayer = static_cast<LayerD3D9*>(aLayer->ImplData());
+  mRoot = aLayer;
 }
 
 already_AddRefed<ThebesLayer>
@@ -198,8 +198,8 @@ LayerManagerD3D9::Render()
 
   device()->BeginScene();
 
-  if (mRootLayer) {
-    const nsIntRect *clipRect = mRootLayer->GetLayer()->GetClipRect();
+  if (mRoot) {
+    const nsIntRect *clipRect = mRoot->GetClipRect();
     RECT r;
     if (clipRect) {
       r.left = (LONG)clipRect->x;
@@ -213,7 +213,7 @@ LayerManagerD3D9::Render()
     }
     device()->SetScissorRect(&r);
 
-    mRootLayer->RenderLayer();
+    static_cast<LayerD3D9*>(mRoot->ImplData())->RenderLayer();
   }
 
   device()->EndScene();
diff --git a/gfx/layers/d3d9/LayerManagerD3D9.h b/gfx/layers/d3d9/LayerManagerD3D9.h
index d481f3fcf0f..f9a3e5b7661 100644
--- a/gfx/layers/d3d9/LayerManagerD3D9.h
+++ b/gfx/layers/d3d9/LayerManagerD3D9.h
@@ -145,6 +145,10 @@ public:
       mDeviceManager = nsnull;
   }
 
+#ifdef MOZ_LAYERS_HAVE_LOG
+  virtual const char* Name() const { return "D3D9"; }
+#endif // MOZ_LAYERS_HAVE_LOG
+
 private:
   /* Device manager instance */
   static DeviceManagerD3D9 *mDeviceManager;
@@ -160,9 +164,6 @@ private:
    */
   nsRefPtr<gfxContext> mTarget;
 
-  /* Current root layer. */
-  LayerD3D9 *mRootLayer;
-
   /* Callback info for current transaction */
   CallbackInfo mCurrentCallbackInfo;
 
diff --git a/gfx/layers/opengl/LayerManagerOGL.h b/gfx/layers/opengl/LayerManagerOGL.h
index dd054edafa4..e7d731ac5ba 100644
--- a/gfx/layers/opengl/LayerManagerOGL.h
+++ b/gfx/layers/opengl/LayerManagerOGL.h
@@ -293,6 +293,10 @@ public:
                     aFlipped);
   }
 
+#ifdef MOZ_LAYERS_HAVE_LOG
+   virtual const char* Name() const { return "OGL"; }
+#endif // MOZ_LAYERS_HAVE_LOG
+
 private:
   /** Widget associated with this layer manager */
   nsIWidget *mWidget;