Make ComponentInstaller refcounted.

components/update_client/test/component_patcher_unittest.cc

 // Copyright 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 "base/base_paths.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 51 matching lines @@
       .AppendASCII("update_client")
       .AppendASCII(file);
 }
 
 }  // namespace
 
 ComponentPatcherOperationTest::ComponentPatcherOperationTest() {
   EXPECT_TRUE(unpack_dir_.CreateUniqueTempDir());
   EXPECT_TRUE(input_dir_.CreateUniqueTempDir());
   EXPECT_TRUE(installed_dir_.CreateUniqueTempDir());
-  installer_.reset(new ReadOnlyTestInstaller(installed_dir_.path()));
+  installer_ = new ReadOnlyTestInstaller(installed_dir_.path());
   task_runner_ = base::MessageLoop::current()->task_runner();
 }
 
 ComponentPatcherOperationTest::~ComponentPatcherOperationTest() {
 }
 
 // Verify that a 'create' delta update operation works correctly.
 TEST_F(ComponentPatcherOperationTest, CheckCreateOperation) {
   EXPECT_TRUE(base::CopyFile(
       test_file("binary_output.bin"),
@@ skipping 108 matching lines @@
 
   EXPECT_EQ(true, callback.called_);
   EXPECT_EQ(ComponentUnpacker::kNone, callback.error_);
   EXPECT_EQ(0, callback.extra_code_);
   EXPECT_TRUE(base::ContentsEqual(
       unpack_dir_.path().Append(FILE_PATH_LITERAL("output.bin")),
       test_file("binary_output.bin")));
 }
 
 }  // namespace update_client