diff --git content/browser/renderer_host/browser_compositor_view_mac.h content/browser/renderer_host/browser_compositor_view_mac.h
index 18c9e514c3b5..e3730ce40046 100644
--- content/browser/renderer_host/browser_compositor_view_mac.h
+++ content/browser/renderer_host/browser_compositor_view_mac.h
@@ -58,6 +58,7 @@ class CONTENT_EXPORT BrowserCompositorMac : public DelegatedFrameHostClient,
 
   // These will not return nullptr until Destroy is called.
   DelegatedFrameHost* GetDelegatedFrameHost();
+  ui::Layer* GetRootLayer() { return root_layer_.get(); }
 
   // Ensure that the currect compositor frame be cleared (even if it is
   // potentially visible).
@@ -69,6 +70,7 @@ class CONTENT_EXPORT BrowserCompositorMac : public DelegatedFrameHostClient,
   // no valid frame is available.
   const gfx::CALayerParams* GetLastCALayerParams() const;
 
+  ui::Compositor* GetCompositor();
   gfx::AcceleratedWidget GetAcceleratedWidget();
   void DidCreateNewRendererCompositorFrameSink(
       viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink);
diff --git content/browser/renderer_host/browser_compositor_view_mac.mm content/browser/renderer_host/browser_compositor_view_mac.mm
index 65f1326ef578..446e93703e7b 100644
--- content/browser/renderer_host/browser_compositor_view_mac.mm
+++ content/browser/renderer_host/browser_compositor_view_mac.mm
@@ -240,6 +240,12 @@ BrowserCompositorMac::~BrowserCompositorMac() {
     g_spare_recyclable_compositors.Get().clear();
 }
 
+ui::Compositor* BrowserCompositorMac::GetCompositor() {
+  if (recyclable_compositor_)
+    return recyclable_compositor_->compositor();
+  return nullptr;
+}
+
 gfx::AcceleratedWidget BrowserCompositorMac::GetAcceleratedWidget() {
   if (recyclable_compositor_) {
     return recyclable_compositor_->accelerated_widget_mac()