DevTools: enable target domain handler on the browser target, make browser target non-discoverable.

content/browser/devtools/browser_devtools_agent_host.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/devtools/browser_devtools_agent_host.h"
 
 #include "base/bind.h"
 #include "base/guid.h"
 #include "base/memory/ptr_util.h"
 #include "content/browser/devtools/devtools_session.h"
@@ skipping 28 matching lines @@
       tethering_task_runner_(tethering_task_runner),
       socket_callback_(socket_callback),
       only_discovery_(only_discovery) {
   NotifyCreated();
 }
 
 BrowserDevToolsAgentHost::~BrowserDevToolsAgentHost() {
 }
 
 void BrowserDevToolsAgentHost::AttachSession(DevToolsSession* session) {
-  if (only_discovery_) {
-    session->AddHandler(base::WrapUnique(new protocol::TargetHandler()));
+  session->AddHandler(base::WrapUnique(new protocol::TargetHandler()));
+
+  if (only_discovery_)
     return;
-  }
 
   session->AddHandler(base::WrapUnique(new protocol::IOHandler(
       GetIOContext())));
   session->AddHandler(base::WrapUnique(new protocol::MemoryHandler()));
   session->AddHandler(base::WrapUnique(new protocol::SystemInfoHandler()));
   session->AddHandler(base::WrapUnique(new protocol::TetheringHandler(
       socket_callback_, tethering_task_runner_)));
   session->AddHandler(base::WrapUnique(new protocol::TracingHandler(
       protocol::TracingHandler::Browser,
       FrameTreeNode::kFrameTreeNodeInvalidId,
@@ skipping 29 matching lines @@
 bool BrowserDevToolsAgentHost::DispatchProtocolMessage(
     DevToolsSession* session,
     const std::string& message) {
   int call_id;
   std::string method;
   session->Dispatch(message, &call_id, &method);
   return true;
 }
 
 }  // content