cc: Route output surface requests and visiblity calls for the remote
client LayerTreeHost.

This also fixes the error for commits aborted on the server due to output surface lost.

BUG=550687, 577301
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1583033002

Cr-Commit-Position: refs/heads/master@{#372522}

diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 5c3d6d56..0a166e03 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn

@@ -907,6 +907,7 @@
     "trees/layer_tree_host_unittest_picture.cc",
     "trees/layer_tree_host_unittest_proxy.cc",
     "trees/layer_tree_host_unittest_record_gpu_histogram.cc",
+    "trees/layer_tree_host_unittest_remote_server.cc",
     "trees/layer_tree_host_unittest_scroll.cc",
     "trees/layer_tree_host_unittest_serialization.cc",
     "trees/layer_tree_host_unittest_video.cc",