Make attachment broker a subclass of IPC::Listener.

ipc/attachment_broker_win_unittest.cc

Index: ipc/attachment_broker_win_unittest.cc
diff --git a/ipc/attachment_broker_win_unittest.cc b/ipc/attachment_broker_win_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1e7db65f2e403176b54e2e658bf766a76c67ff31
--- /dev/null
+++ b/ipc/attachment_broker_win_unittest.cc
@@ -0,0 +1,51 @@
+// Copyright 2015 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 "build/build_config.h"
+
+#include <windows.h>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/process/process.h"
+#include "ipc/attachment_broker_messages.h"
+#include "ipc/attachment_broker_win.h"
+#include "ipc/handle_attachment_win.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace IPC {
+
+TEST(AttachmentBrokerWinTest, ReceiveValidMessage) {
+  HANDLE handle = LongToHandle(8);
+  base::ProcessId destination = base::Process::Current().Pid();
+  scoped_refptr<internal::HandleAttachmentWin> attachment(
+      new internal::HandleAttachmentWin(handle));
+  AttachmentBrokerMsg_WinHandleHasBeenDuplicated msg(
+      attachment->GetWireFormat(destination));
+  AttachmentBrokerWin attachment_broker;
+  EXPECT_TRUE(attachment_broker.OnMessageReceived(msg));
+  EXPECT_EQ(1u, attachment_broker.attachments_.size());
+
+  scoped_refptr<BrokerableAttachment> received_attachment =
+      attachment_broker.attachments_.front();
+  EXPECT_EQ(BrokerableAttachment::WIN_HANDLE,
+            received_attachment->GetBrokerableType());
+  internal::HandleAttachmentWin* received_handle_attachment =
+      static_cast<internal::HandleAttachmentWin*>(received_attachment.get());
+  EXPECT_EQ(handle, received_handle_attachment->get_handle());
+}
+
+TEST(AttachmentBrokerWinTest, ReceiveInvalidMessage) {
+  HANDLE handle = LongToHandle(8);
+  base::ProcessId destination = base::Process::Current().Pid() + 1;
+  scoped_refptr<internal::HandleAttachmentWin> attachment(
+      new internal::HandleAttachmentWin(handle));
+  AttachmentBrokerMsg_WinHandleHasBeenDuplicated msg(
+      attachment->GetWireFormat(destination));
+  AttachmentBrokerWin attachment_broker;
+  EXPECT_TRUE(attachment_broker.OnMessageReceived(msg));
+  EXPECT_EQ(0u, attachment_broker.attachments_.size());
+}
+
+}  // namespace IPC