[DevTools] Make DevTools clients talk directly to DevToolsAgentHost instead of using DevToolsManage…

chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm

Index: chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
index 5bc804be3f6796f9680bbc1ab5a8ea6210875aee..821e21734625b3369fa28282f4be28e1cc3298dd 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
@@ -20,7 +20,6 @@
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
 #include "components/web_modal/popup_manager.h"
 #include "content/public/browser/devtools_agent_host.h"
-#include "content/public/browser/devtools_manager.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
@@ -96,13 +95,11 @@ class DevtoolsNotificationBridge : public content::NotificationObserver {
       devtools_callback_(base::Bind(
           &DevtoolsNotificationBridge::OnDevToolsStateChanged,
           base::Unretained(this))) {
-    content::DevToolsManager::GetInstance()->AddAgentStateCallback(
-        devtools_callback_);
+    content::DevToolsAgentHost::AddAgentStateCallback(devtools_callback_);
   }
 
   virtual ~DevtoolsNotificationBridge() {
-    content::DevToolsManager::GetInstance()->RemoveAgentStateCallback(
-        devtools_callback_);
+    content::DevToolsAgentHost::RemoveAgentStateCallback(devtools_callback_);
   }
 
   void OnDevToolsStateChanged(content::DevToolsAgentHost* agent_host,