check network connectivity in onPageTranslated callback.

components/translate/content/browser/content_translate_driver.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 "components/translate/content/browser/content_translate_driver.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/translate/core/browser/translate_manager.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/referrer.h"
+#include "net/base/network_change_notifier.h"
 #include "net/http/http_status_code.h"
 #include "url/gurl.h"
 
 namespace {
 
 // The maximum number of attempts we'll do to see if the page has finshed
 // loading before giving up the translation
 const int kMaxTranslateLoadCheckAttempts = 20;
 
 }  // namespace
@@ skipping 219 matching lines @@
 }
 
 void ContentTranslateDriver::OnPageTranslated(
     bool cancelled,
     const std::string& original_lang,
     const std::string& translated_lang,
     TranslateErrors::Type error_type) {
   if (cancelled)
     return;
 
+  if (net::NetworkChangeNotifier::IsOffline()) {
+    error_type = TranslateErrors::NETWORK;
+  }
+
   translate_manager_->PageTranslated(
       original_lang, translated_lang, error_type);
   for (auto& observer : observer_list_)
     observer.OnPageTranslated(original_lang, translated_lang, error_type);
 }
 
 }  // namespace translate