Create DomAgent and CSSAgent in Chrome.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 55ea0ce9d6a4eed4ad374932c280baa80cf67ffb..af3bebd3389dfff6ee8465db8cffb31e289dcd0e 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -130,9 +130,6 @@
 #include "chromeos/system/devicemode.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
-#include "components/ui_devtools/devtools_server.h"
-#include "components/ui_devtools/views/ui_devtools_css_agent.h"
-#include "components/ui_devtools/views/ui_devtools_dom_agent.h"
 #include "services/preferences/public/cpp/pref_service_factory.h"
 #include "services/preferences/public/interfaces/preferences.mojom.h"
 #include "services/service_manager/public/cpp/connector.h"
@@ -855,19 +852,6 @@ void Shell::Init(const ShellInitParams& init_params) {
 
   wallpaper_controller_ = base::MakeUnique<WallpaperController>();
 
-  // Start devtools server
-  devtools_server_ = ui_devtools::UiDevToolsServer::Create(nullptr);
-  if (devtools_server_) {
-    auto dom_backend = base::MakeUnique<ui_devtools::UIDevToolsDOMAgent>();
-    auto css_backend =
-        base::MakeUnique<ui_devtools::UIDevToolsCSSAgent>(dom_backend.get());
-    auto devtools_client = base::MakeUnique<ui_devtools::UiDevToolsClient>(
-        "Ash", devtools_server_.get());
-    devtools_client->AddAgent(std::move(dom_backend));
-    devtools_client->AddAgent(std::move(css_backend));
-    devtools_server_->AttachClient(std::move(devtools_client));
-  }
-
   if (config == Config::MASH)
     app_list_delegate_impl_ = base::MakeUnique<AppListDelegateImpl>();