Move chrome.diagnostics API to extensions/.

chrome/common/extensions/api/diagnostics.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.
-
-// Use the <code>chrome.diagnostics</code> API to query various properties of
-// the environment that may be useful for diagnostics.
-namespace diagnostics {
-  dictionary SendPacketOptions {
-    // Target IP address.
-    DOMString ip;
-    // Packet time to live value. If omitted, the system default value will be
-    // used.
-    long? ttl;
-    // Packet timeout in seconds. If omitted, the system default value will be
-    // used.
-    long? timeout;
-    // Size of the payload. If omitted, the system default value will be used.
-    long? size;
-  };
-
-  dictionary SendPacketResult {
-    // The IP of the host which we receives the ICMP reply from.
-    // The IP may differs from our target IP if the packet's ttl is used up.
-    DOMString ip;
-
-    // Latency in millisenconds.
-    double latency;
-  };
-
-  callback SendPacketCallback = void(SendPacketResult result);
-
-  interface Functions {
-    // Send a packet of the given type with the given parameters.
-    static void sendPacket(SendPacketOptions options,
-                           SendPacketCallback callback);
-  };
-};