[Extensions] DCHECK that ExtensionFunctions respond (and only once)

chrome/browser/extensions/api/activity_log_private/activity_log_private_api.h

 // Copyright 2013 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.
 
 // This extension API provides access to the Activity Log, which is a
 // monitoring framework for extension behavior. Only specific Google-produced
 // extensions should have access to it.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_ACTIVITY_LOG_PRIVATE_ACTIVITY_LOG_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_ACTIVITY_LOG_PRIVATE_ACTIVITY_LOG_PRIVATE_API_H_
@@ skipping 63 matching lines @@
   // ExtensionFunction:
   bool RunAsync() override;
 
  private:
   void OnLookupCompleted(
       std::unique_ptr<std::vector<scoped_refptr<Action>>> activities);
 };
 
 // The implementation of activityLogPrivate.deleteActivities
 class ActivityLogPrivateDeleteActivitiesFunction
-    : public ChromeAsyncExtensionFunction {
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("activityLogPrivate.deleteActivities",
                              ACTIVITYLOGPRIVATE_DELETEACTIVITIES)
 
  protected:
   ~ActivityLogPrivateDeleteActivitiesFunction() override {}
 
   // ExtensionFunction:
-  bool RunAsync() override;
+  ResponseAction Run() override;
 };
 
 // The implementation of activityLogPrivate.deleteDatabase
 class ActivityLogPrivateDeleteDatabaseFunction
-    : public ChromeAsyncExtensionFunction {
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("activityLogPrivate.deleteDatabase",
                              ACTIVITYLOGPRIVATE_DELETEDATABASE)
 
  protected:
   ~ActivityLogPrivateDeleteDatabaseFunction() override {}
 
   // ExtensionFunction:
-  bool RunAsync() override;
+  ResponseAction Run() override;
 };
 
 // The implementation of activityLogPrivate.deleteUrls
-class ActivityLogPrivateDeleteUrlsFunction
-    : public ChromeAsyncExtensionFunction {
+class ActivityLogPrivateDeleteUrlsFunction : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("activityLogPrivate.deleteUrls",
                              ACTIVITYLOGPRIVATE_DELETEURLS)
 
  protected:
   ~ActivityLogPrivateDeleteUrlsFunction() override {}
 
   // ExtensionFunction:
-  bool RunAsync() override;
+  ResponseAction Run() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_ACTIVITY_LOG_PRIVATE_ACTIVITY_LOG_PRIVATE_API_H_