[DevTools] Calculate target type and title once in constructor

content/browser/devtools/render_frame_devtools_agent_host.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 #define CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 153 matching lines @@
 
   // Stores per-host state between DisconnectWebContents and ConnectWebContents.
   std::unique_ptr<FrameHostHolder> disconnected_;
 
   std::unique_ptr<DevToolsFrameTraceRecorder> frame_trace_recorder_;
 #if defined(OS_ANDROID)
   std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 #endif
   RenderFrameHostImpl* handlers_frame_host_;
   bool current_frame_crashed_;
+  std::string title_;
+  std::string type_;
 
   // PlzNavigate
 
   // Handle that caused the setting of pending_.
   NavigationHandle* pending_handle_;
 
   // List of handles currently navigating.
   std::set<NavigationHandle*> navigating_handles_;
 
   struct PendingMessage {
     int session_id;
     std::string method;
     std::string message;
   };
   // <call_id> -> PendingMessage
   std::map<int, PendingMessage> in_navigation_protocol_message_buffer_;
 
   // The FrameTreeNode associated with this agent.
   FrameTreeNode* frame_tree_node_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameDevToolsAgentHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_