Revert of [DevTools] Consolidate overlay-related functionality in Overlay domain

headless/lib/browser/headless_devtools_client_impl.h

Index: headless/lib/browser/headless_devtools_client_impl.h
diff --git a/headless/lib/browser/headless_devtools_client_impl.h b/headless/lib/browser/headless_devtools_client_impl.h
index 3accb438c7887b6c2e91b716fd8d0a357496459d..1b1796736a3567a662b50e85fd0463b569ed204b 100644
--- a/headless/lib/browser/headless_devtools_client_impl.h
+++ b/headless/lib/browser/headless_devtools_client_impl.h
@@ -34,6 +34,7 @@
 #include "headless/public/devtools/domains/network.h"
 #include "headless/public/devtools/domains/page.h"
 #include "headless/public/devtools/domains/profiler.h"
+#include "headless/public/devtools/domains/rendering.h"
 #include "headless/public/devtools/domains/runtime.h"
 #include "headless/public/devtools/domains/security.h"
 #include "headless/public/devtools/domains/service_worker.h"
@@ -86,6 +87,7 @@
   network::Domain* GetNetwork() override;
   page::Domain* GetPage() override;
   profiler::Domain* GetProfiler() override;
+  rendering::Domain* GetRendering() override;
   runtime::Domain* GetRuntime() override;
   security::Domain* GetSecurity() override;
   service_worker::Domain* GetServiceWorker() override;
@@ -188,6 +190,7 @@
   network::ExperimentalDomain network_domain_;
   page::ExperimentalDomain page_domain_;
   profiler::ExperimentalDomain profiler_domain_;
+  rendering::ExperimentalDomain rendering_domain_;
   runtime::ExperimentalDomain runtime_domain_;
   security::ExperimentalDomain security_domain_;
   service_worker::ExperimentalDomain service_worker_domain_;