[DevTools] Move more domains to new generator.

content/browser/devtools/render_frame_devtools_agent_host.cc

Index: content/browser/devtools/render_frame_devtools_agent_host.cc
diff --git a/content/browser/devtools/render_frame_devtools_agent_host.cc b/content/browser/devtools/render_frame_devtools_agent_host.cc
index 8975be6473baf109fbe26ae0f6134f63f202d379..a0636149c6454812298b93ef2882fa3acc26b211 100644
--- a/content/browser/devtools/render_frame_devtools_agent_host.cc
+++ b/content/browser/devtools/render_frame_devtools_agent_host.cc
@@ -395,7 +395,6 @@ void RenderFrameDevToolsAgentHost::WebContentsCreated(
 RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
     RenderFrameHostImpl* host)
     : DevToolsAgentHostImpl(base::GenerateGUID()),
-      dom_handler_(new devtools::dom::DOMHandler()),
       input_handler_(new devtools::input::InputHandler()),
       inspector_handler_(new devtools::inspector::InspectorHandler()),
       network_handler_(new devtools::network::NetworkHandler()),
@@ -414,7 +413,6 @@ RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
       pending_handle_(nullptr),
       frame_tree_node_(host->frame_tree_node()) {
   DevToolsProtocolDispatcher* dispatcher = protocol_handler_->dispatcher();
-  dispatcher->SetDOMHandler(dom_handler_.get());
   dispatcher->SetInputHandler(input_handler_.get());
   dispatcher->SetInspectorHandler(inspector_handler_.get());
   dispatcher->SetNetworkHandler(network_handler_.get());
@@ -497,6 +495,10 @@ WebContents* RenderFrameDevToolsAgentHost::GetWebContents() {
 void RenderFrameDevToolsAgentHost::Attach() {
   session()->dispatcher()->setFallThroughForNotFound(true);
 
+  dom_handler_.reset(new protocol::DOMHandler(GetIOContext()));
+  dom_handler_->Wire(session()->dispatcher());
+  dom_handler_->SetRenderFrameHost(handlers_frame_host_);
+
   io_handler_.reset(new protocol::IOHandler(GetIOContext()));
   io_handler_->Wire(session()->dispatcher());
 
@@ -514,6 +516,8 @@ void RenderFrameDevToolsAgentHost::Attach() {
 }
 
 void RenderFrameDevToolsAgentHost::Detach() {
+  dom_handler_->Disable();
+  dom_handler_.reset();
   io_handler_->Disable();
   io_handler_.reset();
   tracing_handler_->Disable();
@@ -913,7 +917,8 @@ void RenderFrameDevToolsAgentHost::
 void RenderFrameDevToolsAgentHost::UpdateProtocolHandlers(
     RenderFrameHostImpl* host) {
   handlers_frame_host_ = host;
-  dom_handler_->SetRenderFrameHost(host);
+  if (dom_handler_)
+    dom_handler_->SetRenderFrameHost(host);
   if (emulation_handler_)
     emulation_handler_->SetRenderFrameHost(host);
   input_handler_->SetRenderWidgetHost(