Make ComponentInstaller refcounted.

components/update_client/component_unpacker.h

 // 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.
 
 #ifndef COMPONENTS_UPDATE_CLIENT_COMPONENT_UNPACKER_H_
 #define COMPONENTS_UPDATE_CLIENT_COMPONENT_UNPACKER_H_
 
 #include <stdint.h>
 #include <string>
 #include <vector>
@@ skipping 77 matching lines @@
     kDeltaPatchProcessFailure,
     kDeltaMissingExistingFile,
     kFingerprintWriteFailed,
   };
 
   typedef base::Callback<void(Error, int)> Callback;
 
   // Constructs an unpacker for a specific component unpacking operation.
   // |pk_hash| is the expected/ public key SHA256 hash. |path| is the current
   // location of the CRX.
-  ComponentUnpacker(const std::vector<uint8_t>& pk_hash,
-                    const base::FilePath& path,
-                    const std::string& fingerprint,
-                    ComponentInstaller* installer,
-                    scoped_refptr<OutOfProcessPatcher> oop_patcher,
-                    scoped_refptr<base::SequencedTaskRunner> task_runner);
+  ComponentUnpacker(
+      const std::vector<uint8_t>& pk_hash,
+      const base::FilePath& path,
+      const std::string& fingerprint,
+      const scoped_refptr<ComponentInstaller>& installer,
+      const scoped_refptr<OutOfProcessPatcher>& oop_patcher,
+      const scoped_refptr<base::SequencedTaskRunner>& task_runner);
 
   // Begins the actual unpacking of the files. May invoke a patcher if the
   // package is a differential update. Calls |callback| with the result.
   void Unpack(const Callback& callback);
 
  private:
   friend class base::RefCountedThreadSafe<ComponentUnpacker>;
 
   virtual ~ComponentUnpacker();
 
@@ skipping 26 matching lines @@
   // Finish is responsible for calling the callback provided in Start().
   void Finish();
 
   std::vector<uint8_t> pk_hash_;
   base::FilePath path_;
   base::FilePath unpack_path_;
   base::FilePath unpack_diff_path_;
   bool is_delta_;
   std::string fingerprint_;
   scoped_refptr<ComponentPatcher> patcher_;
-  ComponentInstaller* installer_;
+  scoped_refptr<ComponentInstaller> installer_;
   Callback callback_;
   scoped_refptr<OutOfProcessPatcher> oop_patcher_;
   Error error_;
   int extended_error_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentUnpacker);
 };
 
 }  // namespace update_client
 
 #endif  // COMPONENTS_UPDATE_CLIENT_COMPONENT_UNPACKER_H_