Revert of cc: Delete all the RendererCapabilities.

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 0f0b31ebebea03b41ac4d65987060b09d1574e08..2e2a0b19056eb87d833b69fd5244e1511416c897 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -567,6 +567,10 @@
   proxy_->SetDeferCommits(defer_commits);
 }
 
+const RendererCapabilities& LayerTreeHost::GetRendererCapabilities() const {
+  return proxy_->GetRendererCapabilities();
+}
+
 void LayerTreeHost::SetNeedsAnimate() {
   proxy_->SetNeedsAnimate();
   NotifySwapPromiseMonitorsOfSetNeedsCommit();