Add support to the UI Service to run it inside the browser's process.

services/ui/ws/threaded_image_cursors_factory.h

Index: services/ui/ws/threaded_image_cursors_factory.h
diff --git a/services/ui/ws/threaded_image_cursors_factory.h b/services/ui/ws/threaded_image_cursors_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..1deab54bcbb2e24041e50b16abd8318876b39c3a
--- /dev/null
+++ b/services/ui/ws/threaded_image_cursors_factory.h
@@ -0,0 +1,23 @@
+// Copyright 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 SERVICES_UI_WS_THREADED_IMAGE_CURSORS_FACTORY_H_
+#define SERVICES_UI_WS_THREADED_IMAGE_CURSORS_FACTORY_H_
+
+#include <memory>
+
+namespace ui {
+namespace ws {
+class ThreadedImageCursors;
+
+class ThreadedImageCursorsFactory {
+ public:
+  virtual ~ThreadedImageCursorsFactory() {}
+  virtual std::unique_ptr<ThreadedImageCursors> CreateCursors() = 0;
+};
+
+}  // namespace ws
+}  // namespace ui
+
+#endif  // SERVICES_UI_WS_THREADED_IMAGE_CURSORS_FACTORY_H_