Support setting mouse cursor icon in Android N.

ui/base/cursor/cursors_android.h

Index: ui/base/cursor/cursors_android.h
diff --git a/ui/base/cursor/cursors_android.h b/ui/base/cursor/cursors_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..14af2b6dcecc73611c8bfa89ee10a3d84811fc6f
--- /dev/null
+++ b/ui/base/cursor/cursors_android.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2017 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 UI_BASE_CURSOR_CURSOR_ANDROID_H_
+#define UI_BASE_CURSOR_CURSOR_ANDROID_H_
+
+#include "ui/base/ui_base_export.h"
+
+class SkBitmap;
+
+namespace ui {
+
+bool UI_BASE_EXPORT GetCursorBitmap(int type, SkBitmap* bitmap);
+
+}  // namespace ui
+
+#endif  // UI_BASE_CURSOR_CURSORS_AURA_H_