Make ComponentInstaller refcounted.

components/component_updater/component_updater_service.cc

 // Copyright 2014 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.
 
 #include "components/component_updater/component_updater_service.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 90 matching lines @@
   Status Stop() override;
   Status RegisterComponent(const CrxComponent& component) override;
   std::vector<std::string> GetComponentIDs() const override;
   OnDemandUpdater& GetOnDemandUpdater() override;
   void MaybeThrottle(const std::string& crx_id,
                      const base::Closure& callback) override;
   scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner() override;
 
   // Context for a crx download url request.
   struct CRXContext {
-    ComponentInstaller* installer;
+    scoped_refptr<ComponentInstaller> installer;
     std::vector<uint8_t> pk_hash;
     std::string id;
     std::string fingerprint;
     CRXContext() : installer(NULL) {}
   };
 
  private:
   enum ErrorCategory {
     kErrorNone = 0,
     kNetworkError,
@@ skipping 880 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 
 // The component update factory. Using the component updater as a singleton
 // is the job of the browser process.
 ComponentUpdateService* ComponentUpdateServiceFactory(Configurator* config) {
   DCHECK(config);
   return new CrxUpdateService(config);
 }
 
 }  // namespace component_updater