[CRD iOS] Add the host setup instruction page

remoting/ios/facade/host_list_fetcher.cc

 // Copyright 2017 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 "remoting/ios/facade/host_list_fetcher.h"
 
 #include <algorithm>
 #include <thread>
 
 #include "base/bind.h"
@@ skipping 86 matching lines @@
   }
 
   const base::DictionaryValue* data = nullptr;
   if (!response->GetDictionary("data", &data)) {
     LOG(ERROR) << "Hostlist response data is empty";
     return false;
   }
 
   const base::ListValue* hosts = nullptr;
   if (!data->GetList("items", &hosts)) {
-    LOG(ERROR) << "Failed to find hosts in Hostlist response data";
-    return false;
+    // This will happen if the user has no host.
+    return true;
   }
 
   // Any host_info with malformed data will not be added to the hostlist.
   const base::DictionaryValue* host_dict;
   for (const auto& host_info : *hosts) {
     remoting::HostInfo host;
     if (host_info.GetAsDictionary(&host_dict) &&
         host.ParseHostInfo(*host_dict)) {
       hostlist->push_back(host);
     }
   }
   return true;
 }
 
 void HostListFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
   DCHECK(source);
 
   std::vector<HostInfo> hostlist;
   if (!ProcessResponse(&hostlist)) {
     hostlist.clear();
   }
   std::sort(hostlist.begin(), hostlist.end(), &compareHost);
   base::ResetAndReturn(&hostlist_callback_).Run(hostlist);
 }
 
 }  // namespace remoting