Extract NativeAppWindow from src/extensions

components/native_app_window/draggable_region.h

+// Copyright (c) 2012 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 COMPONENTS_NATIVE_APP_WINDOW_DRAGGABLE_REGION_H_
+#define COMPONENTS_NATIVE_APP_WINDOW_DRAGGABLE_REGION_H_
+
+#include <vector>
+
+#include "components/native_app_window/native_app_window_export.h"
+#include "ui/gfx/geometry/rect.h"
+
+class SkRegion;
+
+namespace native_app_window {
+
+struct NATIVE_APP_WINDOW_EXPORT DraggableRegion {
+  bool draggable;
+  gfx::Rect bounds;
+
+  DraggableRegion();
+};
+
+// Convert draggable regions in raw format to SkRegion format. Caller is
+// responsible for deleting the returned SkRegion instance.
+NATIVE_APP_WINDOW_EXPORT SkRegion* RawDraggableRegionsToSkRegion(
+    const std::vector<DraggableRegion>& regions);
+
+}  // namespace native_app_window
+
+#endif  // COMPONENTS_NATIVE_APP_WINDOW_DRAGGABLE_REGION_H_