Make android directory for Android-specific bits of SkyShell

sky/shell/sky_main.h

Index: sky/shell/sky_main.h
diff --git a/sky/shell/sky_main.h b/sky/shell/sky_main.h
deleted file mode 100644
index 6913690e894700112fc9e952b670a5a8a2f01ccc..0000000000000000000000000000000000000000
--- a/sky/shell/sky_main.h
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-#ifndef SKY_SHELL_SKY_MAIN_H_
-#define SKY_SHELL_SKY_MAIN_H_
-
-#include <jni.h>
-
-namespace sky {
-namespace shell {
-
-bool RegisterSkyMain(JNIEnv* env);
-
-}  // namespace shell
-}  // namespace sky
-
-#endif  // SKY_SHELL_SKY_MAIN_H_