refactor: rename the atom directory to shell

shell/browser/api/atom_api_browser_window_views.cc

@@ -0,0 +1,23 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_browser_window.h"
+
+#include "atom/browser/native_window_views.h"
+
+namespace atom {
+
+namespace api {
+
+void BrowserWindow::UpdateDraggableRegions(
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  if (window_->has_frame())
+    return;
+  static_cast<NativeWindowViews*>(window_.get())
+      ->UpdateDraggableRegions(DraggableRegionsToSkRegion(regions));
+}
+
+}  // namespace api
+
+}  // namespace atom