--- a/gfx/layers/ipc/CompositorBridgeParent.h
+++ b/gfx/layers/ipc/CompositorBridgeParent.h
@@ -35,16 +35,17 @@
 #include "mozilla/layers/LayersMessages.h"  // for TargetConfig
 #include "mozilla/layers/MetricsSharingController.h"
 #include "mozilla/layers/PCompositorBridgeParent.h"
 #include "mozilla/layers/APZTestData.h"
 #include "mozilla/webrender/WebRenderTypes.h"
 #include "mozilla/widget/CompositorWidget.h"
 #include "nsISupportsImpl.h"
 #include "ThreadSafeRefcountingWithMainThreadDestruction.h"
+#include "mozilla/layers/UiCompositorControllerParent.h"
 
 class MessageLoop;
 class nsIWidget;
 
 namespace mozilla {
 
 class CancelableRunnable;
 
@@ -379,16 +380,17 @@ public:
     // this is needed in case a device reset occurs in between allocating a
     // RefLayer id on the parent, and allocating a PLayerTransaction on the
     // child.
     Maybe<uint64_t> mPendingCompositorUpdate;
 
     CompositorController* GetCompositorController() const;
     MetricsSharingController* CrossProcessSharingController() const;
     MetricsSharingController* InProcessSharingController() const;
+    RefPtr<UiCompositorControllerParent> mUiControllerParent;
   };
 
   /**
    * Lookup the indirect shadow tree for |aId| and return it if it
    * exists.  Otherwise null is returned.  This must only be called on
    * the compositor thread.
    */
   static LayerTreeState* GetIndirectShadowTree(uint64_t aId);
@@ -461,16 +463,27 @@ public:
   PWebRenderBridgeParent* AllocPWebRenderBridgeParent(const wr::PipelineId& aPipelineId,
                                                       const LayoutDeviceIntSize& aSize,
                                                       TextureFactoryIdentifier* aTextureFactoryIdentifier,
                                                       uint32_t* aIdNamespace) override;
   bool DeallocPWebRenderBridgeParent(PWebRenderBridgeParent* aActor) override;
   static void SetWebRenderProfilerEnabled(bool aEnabled);
 
   static CompositorBridgeParent* GetCompositorBridgeParentFromLayersId(const uint64_t& aLayersId);
+
+#if defined(MOZ_WIDGET_ANDROID)
+  gfx::IntSize GetEGLSurfaceSize() {
+    return mEGLSurfaceSize;
+  }
+
+  uint64_t GetRootLayerTreeId() {
+    return mRootLayerTreeID;
+  }
+#endif // defined(MOZ_WIDGET_ANDROID)
+
 private:
 
   void Initialize();
 
   /**
    * Called during destruction in order to release resources as early as possible.
    */
   void StopAndClearResources();