[DevTools] Implement Target.setDiscoverTargets method.

content/browser/devtools/devtools_protocol_handler.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/devtools_protocol_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
@@ skipping 56 matching lines @@
   if (!command)
     return true;
   if (PassCommandToDelegate(session_id, command.get()))
     return true;
   return HandleOptionalCommand(session_id, std::move(command), call_id, method);
 }
 
 bool DevToolsProtocolHandler::PassCommandToDelegate(
     int session_id,
     base::DictionaryValue* command) {
-  DevToolsManagerDelegate* delegate =
-      DevToolsManager::GetInstance()->delegate();
-  if (!delegate)
+  DevToolsManagerDelegate* manager_delegate =
+      DevToolsManager::GetInstance()->GetDelegate();
+  if (!manager_delegate)
     return false;
 
   std::unique_ptr<base::DictionaryValue> response(
-      delegate->HandleCommand(agent_host_, command));
+      manager_delegate->HandleCommand(agent_host_, command));
   if (response) {
     client_.SendMessage(session_id, *response);
     return true;
   }
 
   return false;
 }
 
 std::unique_ptr<base::DictionaryValue> DevToolsProtocolHandler::ParseCommand(
     int session_id,
@@ skipping 61 matching lines @@
   DevToolsProtocolDispatcher::CommandHandler command_handler(
       dispatcher_.FindCommandHandler(*method));
   if (!command_handler.is_null()) {
     return command_handler.Run(DevToolsCommandId(*call_id, session_id),
                                TakeDictionary(command.get(), kParamsParam));
   }
   return false;
 }
 
 }  // namespace content