Make ComponentInstaller refcounted.

chrome/browser/component_updater/pepper_flash_component_installer.cc

 // Copyright (c) 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.
 
 #include <stdint.h>
 #include <string.h>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
@@ skipping 317 matching lines @@
 
   return true;
 }
 
 }  // namespace
 
 class PepperFlashComponentInstaller : public update_client::ComponentInstaller {
  public:
   explicit PepperFlashComponentInstaller(const Version& version);
 
-  ~PepperFlashComponentInstaller() override {}
-
+  // ComponentInstaller implementation:
   void OnUpdateError(int error) override;
 
   bool Install(const base::DictionaryValue& manifest,
                const base::FilePath& unpack_path) override;
 
   bool GetInstalledFile(const std::string& file,
                         base::FilePath* installed_file) override;
 
  private:
+  ~PepperFlashComponentInstaller() override {}
+
   Version current_version_;
 };
 
 PepperFlashComponentInstaller::PepperFlashComponentInstaller(
     const Version& version)
     : current_version_(version) {
   DCHECK(version.IsValid());
 }
 
 void PepperFlashComponentInstaller::OnUpdateError(int error) {
@@ skipping 149 matching lines @@
   base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
   if (cmd_line->HasSwitch(switches::kDisableBundledPpapiFlash))
     return;
   BrowserThread::PostTask(BrowserThread::FILE,
                           FROM_HERE,
                           base::Bind(&StartPepperFlashUpdateRegistration, cus));
 #endif
 }
 
 }  // namespace component_updater