Host-side implementation of ARC Intent handler

components/arc/common/intent.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 VideoHost {
-  // Notifies Chrome a request for ipc channel of video acceleration.
-  OnRequestArcVideoAcceleratorChannel() => (handle channel_handle);
+interface IntentHelperHost {
+  OnOpenUrl@0(string url);
 };
 
-interface VideoInstance {
+interface IntentHelperInstance {
   // Establishes full-duplex communication with the host.
-  Init(VideoHost host_ptr);
+  Init@0(IntentHelperHost host_ptr);
 };