[DevTools] Migrate from AgentStateCallbacks to DevToolsAgentHostObserver.

chrome/browser/ui/views/extensions/extension_popup.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 CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_POPUP_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_POPUP_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "chrome/browser/ui/views/extensions/extension_view_views.h"
+#include "content/public/browser/devtools_agent_host_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/views/bubble/bubble_dialog_delegate.h"
 #include "url/gurl.h"
 
 
 class Browser;
 namespace views {
 class Widget;
 }
 
 namespace content {
 class DevToolsAgentHost;
 }
 
 namespace extensions {
 class ExtensionViewHost;
 }
 
 // The bubble used for hosting a browser-action popup provided by an extension.
 class ExtensionPopup : public views::BubbleDialogDelegateView,
                        public ExtensionViewViews::Container,
                        public content::NotificationObserver,
-                       public TabStripModelObserver {
+                       public TabStripModelObserver,
+                       public content::DevToolsAgentHostObserver {
  public:
   enum ShowAction {
     SHOW,
     SHOW_AND_INSPECT,
   };
 
   ~ExtensionPopup() override;
 
   // Create and show a popup with the given |host| positioned adjacent to
   // |anchor_view|.
@@ skipping 53 matching lines @@
 
  private:
   static ExtensionPopup* Create(extensions::ExtensionViewHost* host,
                                 views::View* anchor_view,
                                 views::BubbleBorder::Arrow arrow,
                                 ShowAction show_action);
 
   // Show the bubble, focus on its content, and register listeners.
   void ShowBubble();
 
-  void OnDevToolsStateChanged(content::DevToolsAgentHost*, bool attached);
+  // content::DevToolsAgentHostObserver overrides.
+  void DevToolsAgentHostAttached(
+      content::DevToolsAgentHost* agent_host) override;
+  void DevToolsAgentHostDetached(
+      content::DevToolsAgentHost* agent_host) override;
 
   // The contained host for the view.
   std::unique_ptr<extensions::ExtensionViewHost> host_;
 
   // Flag used to indicate if the pop-up should open a devtools window once
   // it is shown inspecting it.
   bool inspect_with_devtools_;
 
   content::NotificationRegistrar registrar_;
 
-  base::Callback<void(content::DevToolsAgentHost*, bool)> devtools_callback_;
-
   bool widget_initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPopup);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_POPUP_H_