cc: Remove client/engine LayerTreeHostInProcess.

cc/test/layer_tree_host_remote_for_testing.cc

Index: cc/test/layer_tree_host_remote_for_testing.cc
diff --git a/cc/test/layer_tree_host_remote_for_testing.cc b/cc/test/layer_tree_host_remote_for_testing.cc
index 5cfe5d60d8de6c2c0926289c432a14706bedf20f..263cd3ac544c3b79319f236d4b5a8f198a0669d7 100644
--- a/cc/test/layer_tree_host_remote_for_testing.cc
+++ b/cc/test/layer_tree_host_remote_for_testing.cc
@@ -72,7 +72,12 @@ class LayerTreeHostRemoteForTesting::LayerTreeHostInProcessClient
                            const gfx::Vector2dF& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
-                           float top_controls_delta) override {}
+                           float top_controls_delta) override {
+    layer_tree_host_remote_->compositor_state_deserializer_
+        ->ApplyViewportDeltas(inner_delta, outer_delta,
+                              elastic_overscroll_delta, page_scale,
+                              top_controls_delta);
+  }
   void RequestNewCompositorFrameSink() override {
     layer_tree_host_remote_->client()->RequestNewCompositorFrameSink();
   }