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

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

Index: chrome/browser/ui/cocoa/extensions/extension_action_context_menu_controller_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu_controller_browsertest.mm b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu_controller_browsertest.mm
index 2f8fa9151c38a333c255e4bc8063b920199e416f..0d6cf5117a5edc63c89a4d63ff5ddd453215f556 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu_controller_browsertest.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu_controller_browsertest.mm
@@ -22,7 +22,7 @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/pref_names.h"
-#include "content/public/browser/devtools_manager.h"
+#include "content/public/browser/devtools_agent_host.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/common/extension.h"
 #include "grit/generated_resources.h"
@@ -147,13 +147,11 @@ class DevToolsAttachedObserver {
         devtools_callback_(base::Bind(
             &DevToolsAttachedObserver::OnDevToolsStateChanged,
             base::Unretained(this))) {
-    content::DevToolsManager::GetInstance()->AddAgentStateCallback(
-        devtools_callback_);
+    content::DevToolsAgentHost::AddAgentStateCallback(devtools_callback_);
   }
 
   ~DevToolsAttachedObserver() {
-    content::DevToolsManager::GetInstance()->RemoveAgentStateCallback(
-        devtools_callback_);
+    content::DevToolsAgentHost::RemoveAgentStateCallback(devtools_callback_);
   }
 
   void OnDevToolsStateChanged(content::DevToolsAgentHost*, bool attached) {