Allow platform apps to respond to Web Intents

chrome/common/extensions/api/app_runtime.idl

 // Copyright (c) 2012 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.
 
 namespace app.runtime {
 
   callback NullCallback = void ();
 
   // A WebIntents intent object.
   [inline_doc] dictionary Intent {
@@ skipping 15 matching lines @@
 
   // Optional data for the launch.
   [inline_doc] dictionary LaunchData {
     Intent intent;
   };
 
   interface Events {
     static void onLaunched(optional LaunchData launchData);
   };
 
+  dictionary IntentResponse {
+    // Identifies the intent.
+    long intentId;
+
+    // Was this intent successful? (i.e., postSuccess vs postFailure).
+    boolean success;
+
+    // Data associated with the intent response.
+    any data;
+  };
+
+  interface Functions {
+    // postIntentResponse is an internal method to responds to an intent
+    // previously sent to a packaged app. This is identified by intentId, and
+    // should only be invoked at most once per intentId.
+    [nodoc] static void postIntentResponse(IntentResponse intentResponse);
+  };
 };