[Extensions WebUI] Clean up ExtensionSettingsUIBrowserTest

chrome/browser/ui/webui/extensions/extension_settings_browsertest.h

Index: chrome/browser/ui/webui/extensions/extension_settings_browsertest.h
diff --git a/chrome/browser/ui/webui/extensions/extension_settings_browsertest.h b/chrome/browser/ui/webui/extensions/extension_settings_browsertest.h
index 87718bd8066ced344a8b592bf580fab8ca6bcd98..1abb1df7e3b4e751579ea8f96ad98c5fd78b7e9f 100644
--- a/chrome/browser/ui/webui/extensions/extension_settings_browsertest.h
+++ b/chrome/browser/ui/webui/extensions/extension_settings_browsertest.h
@@ -5,16 +5,18 @@
 #ifndef CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_BROWSERTEST_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_BROWSERTEST_H_
 
+#include <memory>
+
+#include "base/files/file_path.h"
 #include "base/macros.h"
-#include "chrome/browser/extensions/chrome_extension_test_notification_observer.h"
 #include "chrome/test/base/web_ui_browser_test.h"
-#include "extensions/browser/extension_dialog_auto_confirm.h"
 #include "extensions/browser/test_management_policy.h"
-#include "extensions/common/extension.h"
 #include "extensions/common/feature_switch.h"
-#include "extensions/common/features/feature_channel.h"
 
-class Profile;
+namespace extensions {
+class Extension;
+class ScopedTestDialogAutoConfirm;
+}
 
 // C++ test fixture used by extension_settings_browsertest.js.
 class ExtensionSettingsUIBrowserTest : public WebUIBrowserTest {
@@ -23,15 +25,6 @@ class ExtensionSettingsUIBrowserTest : public WebUIBrowserTest {
   ~ExtensionSettingsUIBrowserTest() override;
 
  protected:
-  // Get the profile to use.
-  Profile* GetProfile();
-
-  const std::string& last_loaded_extension_id() {
-    return observer_->last_loaded_extension_id();
-  }
-
-  void SetUpOnMainThread() override;
-
   void InstallGoodExtension();
 
   void InstallErrorsExtension();
@@ -55,17 +48,8 @@ class ExtensionSettingsUIBrowserTest : public WebUIBrowserTest {
   void ShrinkWebContentsView();
 
  private:
-  bool WaitForExtensionViewsToLoad();
-  const extensions::Extension* InstallUnpackedExtension(
-      const base::FilePath& path);
   const extensions::Extension* InstallExtension(const base::FilePath& path);
 
-  std::unique_ptr<extensions::ChromeExtensionTestNotificationObserver>
-      observer_;
-
-  // The default profile to be used.
-  Profile* profile_;
-
   // Used to simulate managed extensions (by being registered as a provider).
   extensions::TestManagementPolicyProvider policy_provider_;