Add a instance groups to Connect(), and introduce an Identity struct.

content/renderer/render_frame_impl.cc

 // 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.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 6070 matching lines @@
 template <typename Interface>
 void RenderFrameImpl::GetInterface(mojo::InterfaceRequest<Interface> request) {
   GetServiceRegistry()->ConnectToRemoteService(std::move(request));
 }
 
 mojo::shell::mojom::InterfaceProviderPtr RenderFrameImpl::ConnectToApplication(
     const GURL& url) {
   if (!connector_)
     GetServiceRegistry()->ConnectToRemoteService(mojo::GetProxy(&connector_));
   mojo::shell::mojom::InterfaceProviderPtr interface_provider;
-  connector_->Connect(url.spec(), mojo::shell::mojom::kInheritUserID,
-                      GetProxy(&interface_provider), nullptr,
+  mojo::shell::mojom::IdentityPtr target(mojo::shell::mojom::Identity::New());
+  target->name = url.spec();
+  target->user_id = mojo::shell::mojom::kInheritUserID;
+  target->instance = "";
+  connector_->Connect(std::move(target), GetProxy(&interface_provider), nullptr,
                       base::Bind(&OnGotInstanceID));
   return interface_provider;
 }
 
 media::RendererWebMediaPlayerDelegate*
 RenderFrameImpl::GetWebMediaPlayerDelegate() {
   if (!media_player_delegate_)
     media_player_delegate_ = new media::RendererWebMediaPlayerDelegate(this);
   return media_player_delegate_;
 }
@@ skipping 27 matching lines @@
                                     int match_count,
                                     int ordinal,
                                     const WebRect& selection_rect,
                                     bool final_status_update) {
   Send(new FrameHostMsg_Find_Reply(routing_id_, request_id, match_count,
                                    selection_rect, ordinal,
                                    final_status_update));
 }
 
 }  // namespace content