[remoting android] Add native library and JNI glue for host.

remoting/host/android/remoting_host_jni_registrar.h

Index: remoting/host/android/remoting_host_jni_registrar.h
diff --git a/remoting/client/jni/remoting_jni_registrar.h b/remoting/host/android/remoting_host_jni_registrar.h
similarity index 50%
copy from remoting/client/jni/remoting_jni_registrar.h
copy to remoting/host/android/remoting_host_jni_registrar.h
index e301fbe0ece2879e49c5161311fc43f54f29dcc6..ff12f761a07a91a91a598205d8f99108ded026c7 100644
--- a/remoting/client/jni/remoting_jni_registrar.h
+++ b/remoting/host/android/remoting_host_jni_registrar.h
@@ -1,9 +1,9 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 REMOTING_CLIENT_JNI_REMOTING_JNI_REGISTRAR_H_
-#define REMOTING_CLIENT_JNI_REMOTING_JNI_REGISTRAR_H_
+#ifndef REMOTING_HOST_ANDROID_REMOTING_HOST_JNI_REGISTRAR_H_
+#define REMOTING_HOST_ANDROID_REMOTING_HOST_JNI_REGISTRAR_H_
 
 #include <jni.h>
 
@@ -14,4 +14,4 @@ bool RegisterJni(JNIEnv* env);
 
 }  // namespace remoting
 
-#endif  // REMOTING_CLIENT_JNI_REMOTING_JNI_REGISTRAR_H_
+#endif  // REMOTING_HOST_ANDROID_REMOTING_HOST_JNI_REGISTRAR_H_