[CrOS Tether] Fill out the Initializer class. Tether will now initialize fully once the flag is ena…

chromeos/components/tether/fake_tether_host_fetcher.cc

 // 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.
 
 #include "chromeos/components/tether/fake_tether_host_fetcher.h"
 
 #include "base/memory/ptr_util.h"
 
 namespace chromeos {
 
 namespace tether {
 
 FakeTetherHostFetcher::FakeTetherHostFetcher(
     std::vector<cryptauth::RemoteDevice> tether_hosts,
     bool synchronously_reply_with_results)
-    : TetherHostFetcher("", "", nullptr, nullptr),
+    : TetherHostFetcher(nullptr),
       tether_hosts_(tether_hosts),
       synchronously_reply_with_results_(synchronously_reply_with_results) {}
 
 FakeTetherHostFetcher::FakeTetherHostFetcher(
     bool synchronously_reply_with_results)
     : FakeTetherHostFetcher(std::vector<cryptauth::RemoteDevice>(),
                             synchronously_reply_with_results) {}
 
 FakeTetherHostFetcher::~FakeTetherHostFetcher() {}
 
@@ skipping 19 matching lines @@
     const TetherHostFetcher::TetherHostCallback& callback) {
   requests_.push_back(TetherHostFetchRequest(device_id, callback));
   if (synchronously_reply_with_results_) {
     InvokePendingCallbacks();
   }
 }
 
 }  // namespace tether
 
 }  // namespace chromeos