Android: Don't destroy LayerTreeHost when Surface goes away

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 4f06753ec300ace47a9de3c63b8f5c78e03f1d39..06fa27dd9d7fe01b0a678b5de72688d05e4753d6 100644
--- a/content/browser/renderer_host/compositor_impl_android.h
+++ b/content/browser/renderer_host/compositor_impl_android.h
@@ -156,8 +156,8 @@ class CONTENT_EXPORT CompositorImpl
   scoped_refptr<cc::Layer> subroot_layer_;
 
   scoped_ptr<cc::LayerTreeHost> host_;
-  ui::UIResourceProvider ui_resource_provider_;
-  ui::ResourceManagerImpl resource_manager_;
+  scoped_ptr<ui::UIResourceProvider> ui_resource_provider_;
+  scoped_ptr<ui::ResourceManagerImpl> resource_manager_;
 
   scoped_ptr<cc::OnscreenDisplayClient> display_client_;
   scoped_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;