diff --git a/brillo/binder_watcher.h b/brillo/binder_watcher.h
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+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LIBCHROMEOS_BRILLO_BINDER_WATCHER_H_
+#define LIBCHROMEOS_BRILLO_BINDER_WATCHER_H_
+
+#include <base/macros.h>
+#include <base/message_loop/message_loop.h>
+
+namespace brillo {
+
+// Bridge between libbinder and base::MessageLoop. Construct at startup to make
+// the message loop watch for binder events and pass them to libbinder.
+class BinderWatcher : public base::MessageLoopForIO::Watcher {
+ public:
+  BinderWatcher();
+  ~BinderWatcher() override;
+
+  // Initializes the object, returning true on success.
+  bool Init();
+
+  // base::MessageLoopForIO::Watcher:
+  void OnFileCanReadWithoutBlocking(int fd) override;
+  void OnFileCanWriteWithoutBlocking(int fd) override;
+
+ private:
+  base::MessageLoopForIO::FileDescriptorWatcher watcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(BinderWatcher);
+};
+
+}  // namespace brillo
+
+#endif  // LIBCHROMEOS_BRILLO_BINDER_WATCHER_H_