refactor: rename the atom directory to shell

shell/common/api/atom_api_clipboard_mac.mm

@@ -0,0 +1,24 @@
+// Copyright (c) 2016 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/common/api/atom_api_clipboard.h"
+#include "base/strings/sys_string_conversions.h"
+#include "ui/base/cocoa/find_pasteboard.h"
+
+namespace atom {
+
+namespace api {
+
+void Clipboard::WriteFindText(const base::string16& text) {
+  NSString* text_ns = base::SysUTF16ToNSString(text);
+  [[FindPasteboard sharedInstance] setFindText:text_ns];
+}
+
+base::string16 Clipboard::ReadFindText() {
+  return GetFindPboardText();
+}
+
+}  // namespace api
+
+}  // namespace atom