Add forwarder2

tools/android/forwarder2/device_controller.h

Index: tools/android/forwarder2/device_controller.h
diff --git a/tools/android/forwarder2/device_controller.h b/tools/android/forwarder2/device_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..5fbf08ac5cbbeb3828bf0483d3852e43d2985f16
--- /dev/null
+++ b/tools/android/forwarder2/device_controller.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2012 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 TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_
+#define TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_
+
+#include <hash_map>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "tools/android/forwarder2/socket.h"
+
+using std::hash_map;
+using std::string;
+
+namespace forwarder {
+
+class DeviceListener;
+
+class DeviceController {
+ public:
+  explicit DeviceController(int notifier_fd);
+  ~DeviceController();
+
+  bool Start(const string& adb_unix_socket);
+
+ private:
+  void KillAllListeners();
+  void CleanUpDeadListeners();
+
+  typedef hash_map<int /* port */, linked_ptr<DeviceListener> > ListenersMap;
+  ListenersMap listeners_;
+  Socket kickstart_adb_socket_;
+
+  // Used to notify the controller to exit.
+  const int exit_notifier_fd_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceController);
+};
+
+}  // namespace forwarder
+
+#endif  // TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_