Add forwarder2

tools/android/forwarder2/thread.cc

+// 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.
+
+#include "tools/android/forwarder2/thread.h"
+
+#include "base/logging.h"
+
+namespace forwarder {
+
+Thread::Thread() : thread_(static_cast<pthread_t>(-1)) {}
+
+Thread::~Thread() {}
+
+void Thread::Start() {
+  CHECK_EQ(0, pthread_create(&thread_, NULL, &ThreadCallback, this));
+}
+
+void Thread::Join() {
+  CHECK_NE(static_cast<pthread_t>(-1), thread_);
+  CHECK_EQ(0, pthread_join(thread_, NULL));
+}
+
+// static
+void* Thread::ThreadCallback(void* arg) {
+  CHECK(arg);
+  Thread* obj = reinterpret_cast<Thread*>(arg);
+  obj->Run();
+  return NULL;
+}
+
+}  // namespace forwarder