Make android directory for Android-specific bits of SkyShell

sky/shell/tracing_controller.h

Index: sky/shell/tracing_controller.h
diff --git a/sky/shell/tracing_controller.h b/sky/shell/tracing_controller.h
deleted file mode 100644
index 4a3d3d561e09818ecbb9c10631bdbfb372689058..0000000000000000000000000000000000000000
--- a/sky/shell/tracing_controller.h
+++ /dev/null
@@ -1,19 +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_TRACING_CONTROLLER_H_
-#define SKY_SHELL_TRACING_CONTROLLER_H_
-
-#include "base/android/jni_weak_ref.h"
-#include "base/android/scoped_java_ref.h"
-
-namespace sky {
-namespace shell {
-
-bool RegisterTracingController(JNIEnv* env);
-
-}  // namespace shell
-}  // namespace sky
-
-#endif  // SKY_SHELL_TRACING_CONTROLLER_H_