compositor-worker: cc->blink mutation plumbing

content/browser/renderer_host/compositor_impl_android.h

Index: content/browser/renderer_host/compositor_impl_android.h
diff --git a/content/browser/renderer_host/compositor_impl_android.h b/content/browser/renderer_host/compositor_impl_android.h
index 9b1a60eb0e9190db121134f55d8b89b01c32d26d..152889ce536ec642816693375b18cb05f8d752b6 100644
--- a/content/browser/renderer_host/compositor_impl_android.h
+++ b/content/browser/renderer_host/compositor_impl_android.h
@@ -95,6 +95,7 @@ class CONTENT_EXPORT CompositorImpl
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
+  void ApplyMutations(const cc::LayerTreeMutations& mutations) override {}
   void RequestNewOutputSurface() override;
   void DidInitializeOutputSurface() override;
   void DidFailToInitializeOutputSurface() override;