Remove HangoutsPrivate API

chrome/common/extensions/api/hangouts_private.idl

-// Copyright 2013 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.
-
-// The <code>chrome.hangoutsPrivate</code> API is used by Google Hangouts to
-// wait on a request from Chrome to start a hangout.
-// TODO(rkc): This API is temporary. We are working on plans which include
-// replacing this with a scheme based solution which might be implemented
-// using registerProtocolHandler, but we are still finishing that design.
-// See crbug.com/306672
-namespace hangoutsPrivate {
-
-  enum HangoutType {chat, video, audio};
-
-  dictionary User {
-    // GAIA obfuscated id of the user.
-    DOMString id;
-  };
-
-  dictionary HangoutRequest {
-    // Email of the user sending this request. This has to match the logged in
-    // user otherwise the hangout will not be opened.
-    DOMString from;
-
-    // A list of users with whom to start this hangout with.
-    User[] to;
-
-    // Type of hangout request.
-    HangoutType type;
-  };
-
-  interface Events {
-    // Fired when Chrome wants to request a new hangout be opened up with a
-    // user (or set of users).
-    static void onHangoutRequested(HangoutRequest request);
-  };
-};