Minimum implementation of ARC clipboard Bridge

components/arc/common/clipboard.mojom

+// Copyright 2016 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.
+
+module arc;
+
+interface ClipboardHost {
+  // Tells the host to change its content, usually when the user initiates
+  // a 'copy' action.
+  SetTextContent(string text);
+
+  // Tells the host to return its content, usually when the user initiates
+  // a 'paste' action or when the instance needs to re-sync its clipboard
+  // content with the host.
+  GetTextContent();
+};
+
+interface ClipboardInstance {
+  // Establishes full-duplex communication with the host.
+  Init(ClipboardHost host_ptr);
+
+  // Pass the result of ClipboardHost.GetTextContent().
+  OnGetTextContent(string returnedText);
+};