Cleanup Tool WebUI: Add functionality to the Cleanup button

chrome/browser/ui/webui/cleanup_tool/cleanup_action_handler.h

 // Copyright 2017 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_WEBUI_CLEANUP_TOOL_CLEANUP_ACTION_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CLEANUP_TOOL_CLEANUP_ACTION_HANDLER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "components/component_updater/component_updater_service.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 // The handler for Javascript messages related to the "Chrome Cleanup" view.
 class CleanupActionHandler : public content::WebUIMessageHandler {
  public:
   CleanupActionHandler();
   ~CleanupActionHandler() override;
 
   // WebUIMessageHandler implementation.
   void RegisterMessages() override;
 
  private:
   // Invalidates the weak pointers in callbacks that are no longer safe to run.
   void OnJavascriptDisallowed() override;
 
   void HandleRequestLastScanResult(const base::ListValue* args);
   void HandleStartScan(const base::ListValue* args);
+  void HandleStartCleanup(const base::ListValue* args);
 
   // Returns the scan result initiated by HandleStartScan() to the Javascript
   // caller refererenced by |callback_id|.
   void ReportScanResults(const std::string& callback_id);
 
+  // Returns the cleanup result initiated by HandleStartCleanup() to the
+  // Javascript caller refererenced by |callback_id|.
+  void ReportCleanupResults(const std::string& callback_id);
+
   // Used to cancel callbacks when JavaScript becomes disallowed.
   base::WeakPtrFactory<CleanupActionHandler> callback_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CleanupActionHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CLEANUP_TOOL_CLEANUP_ACTION_HANDLER_H_