Remove unnecessary ERR_CHANNEL_ID_IMPORT_FAILED codepath.

net/quic/crypto/channel_id_chromium.cc

 // Copyright 2014 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 "net/quic/crypto/channel_id_chromium.h"
 
 #include <string>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 172 matching lines @@
       &channel_id_request_);
 }
 
 int ChannelIDSourceChromium::Job::DoGetChannelIDKeyComplete(int result) {
   DCHECK_EQ(STATE_NONE, next_state_);
   if (result != OK) {
     DLOG(WARNING) << "Failed to look up channel ID: " << ErrorToString(result);
     return result;
   }
 
-  if (!channel_id_crypto_key_) {
-    // TODO(wtc): use the new error code ERR_CHANNEL_ID_IMPORT_FAILED to be
-    // added in https://codereview.chromium.org/338093012/.
-    return ERR_UNEXPECTED;
-  }
+  DCHECK(channel_id_crypto_key_);
   channel_id_key_.reset(
       new ChannelIDKeyChromium(std::move(channel_id_crypto_key_)));
-
   return result;
 }
 
 ChannelIDSourceChromium::ChannelIDSourceChromium(
     ChannelIDService* channel_id_service)
     : channel_id_service_(channel_id_service) {}
 
 ChannelIDSourceChromium::~ChannelIDSourceChromium() {
   STLDeleteElements(&active_jobs_);
 }
@@ skipping 10 matching lines @@
   }
   return status;
 }
 
 void ChannelIDSourceChromium::OnJobComplete(Job* job) {
   active_jobs_.erase(job);
   delete job;
 }
 
 }  // namespace net