refactor: rename the atom directory to shell

shell/browser/child_web_contents_tracker.h

@@ -0,0 +1,32 @@
+// Copyright (c) 2017 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_CHILD_WEB_CONTENTS_TRACKER_H_
+#define ATOM_BROWSER_CHILD_WEB_CONTENTS_TRACKER_H_
+
+#include <string>
+
+#include "content/public/browser/web_contents_user_data.h"
+
+namespace atom {
+
+// ChildWebContentsTracker tracks child WebContents
+// created by native `window.open()`
+struct ChildWebContentsTracker
+    : public content::WebContentsUserData<ChildWebContentsTracker> {
+  GURL url;
+  std::string frame_name;
+
+ private:
+  explicit ChildWebContentsTracker(content::WebContents* web_contents);
+  friend class content::WebContentsUserData<ChildWebContentsTracker>;
+
+  WEB_CONTENTS_USER_DATA_KEY_DECL();
+
+  DISALLOW_COPY_AND_ASSIGN(ChildWebContentsTracker);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_CHILD_WEB_CONTENTS_TRACKER_H_