Add commands to manage tabs and contexts to Browser Domain

content/shell/browser/shell_devtools_manager_delegate.cc

 // Copyright 2013 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/shell/browser/shell_devtools_manager_delegate.h"
 
 #include <stdint.h>
 
 #include <vector>
 
@@ skipping 211 matching lines @@
 }
 
 ShellDevToolsManagerDelegate::ShellDevToolsManagerDelegate() {
 }
 
 ShellDevToolsManagerDelegate::~ShellDevToolsManagerDelegate() {
 }
 
 base::DictionaryValue* ShellDevToolsManagerDelegate::HandleCommand(
     DevToolsAgentHost* agent_host,
-    base::DictionaryValue* command) {
-  return NULL;
+    base::DictionaryValue* command_dict) {
+  std::unique_ptr<base::DictionaryValue> result =
+      devtools_discovery::DevToolsDiscoveryManager::GetInstance()
+          ->HandleNewTargetCommand(command_dict);
+  return result.release();  // Caller takes ownership.
 }
 
 }  // namespace content