STH Set: Delay loading until after start-up.

chrome/browser/component_updater/sth_set_component_installer.h

 // Copyright 2016 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_COMPONENT_UPDATER_STH_SET_COMPONENT_INSTALLER_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_STH_SET_COMPONENT_INSTALLER_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
+#include "base/memory/weak_ptr.h"
 #include "components/component_updater/default_component_installer.h"
 
 namespace base {
 class FilePath;
 class Value;
 }  // namespace base
 
 namespace net {
 namespace ct {
 class STHObserver;
@@ skipping 45 matching lines @@
                           std::unique_ptr<base::Value> parsed_json);
 
   // STH parsing failed - do nothing.
   void OnJsonParseError(const std::string& log_id, const std::string& error);
 
   // The observer is not owned by this class, so the code creating an instance
   // of this class is expected to ensure the STHObserver lives as long as
   // this class does. Typically the observer provided will be a global.
   net::ct::STHObserver* sth_observer_;
 
+  // Provides weak_ptrs to this for callbacks.
+  base::WeakPtrFactory<STHSetComponentInstallerTraits> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(STHSetComponentInstallerTraits);
 };
 
 void RegisterSTHSetComponent(ComponentUpdateService* cus,
                              const base::FilePath& user_data_dir);
 
 }  // namespace component_updater
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_STH_SET_COMPONENT_INSTALLER_H_