plugins: use OnChannelError to detect when the channel goes away

chrome/browser/utility_process_host_unittest.cc

 // Copyright (c) 2009 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 "chrome/browser/utility_process_host.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 88 matching lines @@
   FilePath temp_extension_dir;
   ASSERT_TRUE(PathService::Get(base::DIR_TEMP, &temp_extension_dir));
   temp_extension_dir = temp_extension_dir.AppendASCII("extension_test");
   ASSERT_TRUE(file_util::CreateDirectory(temp_extension_dir));
   ASSERT_TRUE(file_util::CopyFile(extension_file,
                                   temp_extension_dir.AppendASCII("theme.crx")));
 
   scoped_refptr<TestUtilityProcessHostClient> client(
       new TestUtilityProcessHostClient(&message_loop_));
   ResourceDispatcherHost rdh(NULL);
-  TestUtilityProcessHost process_host(client.get(), &message_loop_, &rdh);
-  process_host.StartExtensionUnpacker(
+  TestUtilityProcessHost* process_host =
+      new TestUtilityProcessHost(client.get(), &message_loop_, &rdh);
+  // process_host will delete itself when it's done.
+  process_host->StartExtensionUnpacker(
       temp_extension_dir.AppendASCII("theme.crx"));
   message_loop_.Run();
   EXPECT_TRUE(client->success());
 
   // Clean up the temp dir.
   file_util::Delete(temp_extension_dir, true);
 }
 
 }  // namespace