Bring up Firefox Password Import Unittest on OS X.

chrome/browser/importer/firefox_importer_unittest_utils.h

+// 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.
+
+#ifndef CHROME_BROWSER_IMPORTER_UNITTEST_UTILS_H_

[John Grabowski, 2009/08/21 01:13:18]

CHROME_BROWSER_IMPORTER_UNITTEST_UTILS_H_ -->
CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UNITTEST_UTILS_H_

+#define CHROME_BROWSER_IMPORTER_UNITTEST_UTILS_H_
+
+#include "base/basictypes.h"
+#include "base/process_util.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/importer/nss_decryptor.h"
+
+class FFDecryptorServerChannelListener;
+namespace IPC {
+  class Channel;
+}  // namespace IPC
+class MessageLoopForIO;
+
+// On OS X NSSDecryptor needs to run in a separate process, to allow us to use

[John Grabowski, 2009/08/21 01:13:18]

More comments would be nice.  E.g. brief example of what messages go back and
forth.

+// the same uni test on all platforms we use a proxy class which spawns a

[John Grabowski, 2009/08/21 01:13:18]

uni test --> unit test (and run on sentence)

+// child process to do decryption on OS X, and calls through directly
+// to NSSDecryptor on other platforms.
+class FFUnitTestDecryptorProxy {
+ public:
+  // Initialize a decryptor, on return |success| is true if the object was
+  // constructed successfully.
+  FFUnitTestDecryptorProxy(std::wstring &nss_path, bool* success);

[John Grabowski, 2009/08/21 01:13:18]

We don't use C++ exceptions so constructors in general aren't expected to fail. 
That's why, for example, base/thread.h doesn't start the thread in Thread(), but
in Start().  Perhaps move the constructor logic which might fail into a
different method which can return a bool.  Init()?

+  virtual ~FFUnitTestDecryptorProxy();
+
+  // This match the parallel functions in NSSDecryptor.
+  bool Init(const std::wstring& dll_path, const std::wstring& db_path);
+  std::wstring Decrypt(const std::string& crypt);
+
+ private:
+#if defined(OS_MACOSX)
+  // Blocks until either a timeout is reached, or until the client process
+  // responds to an IPC message.
+  // Returns true if a reply was recieved successfully and false if the
+  // the operation timed out.
+  bool WaitForClientResponse();
+
+  base::ProcessHandle child_process_;
+  scoped_ptr<IPC::Channel> channel_;
+  scoped_ptr<FFDecryptorServerChannelListener> listener_;
+  scoped_ptr<MessageLoopForIO> message_loop_;
+#else
+  NSSDecrypter decryptor_;
+#endif  // !OS_MACOSX
+  DISALLOW_COPY_AND_ASSIGN(FFUnitTestDecryptorProxy);
+};
+
+// On Non-OSX platforms FFUnitTestDecryptorProxy simply calls through to
+// NSSDecryptor.
+#if !defined(OS_MACOSX)
+FFUnitTestDecryptorProxy::FFUnitTestDecryptorProxy(std::wstring& /* nss_path */,
+    bool* success) {
+ *success = true;
+}
+
+FFUnitTestDecryptorProxy::~FFUnitTestDecryptorProxy() {
+}
+
+bool FFUnitTestDecryptorProxy::Init(const std::wstring& dll_path,
+    const std::wstring& db_path) {
+  return decryptor_.Init(dll_path, db_path);
+}
+
+std::wstring FFUnitTestDecryptorProxy::Decrypt(const std::string& crypt) {
+  return decryptor_.Decrypt(crypt);
+}
+#endif  // !OS_MACOSX
+
+#endif  // CHROME_BROWSER_IMPORTER_UNITTEST_UTILS_H_