[Translate] Don't try to translate when offline

components/translate/core/browser/translate_manager.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/core/browser/translate_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 13 matching lines @@
 #include "components/translate/core/browser/translate_language_list.h"
 #include "components/translate/core/browser/translate_prefs.h"
 #include "components/translate/core/browser/translate_script.h"
 #include "components/translate/core/browser/translate_url_util.h"
 #include "components/translate/core/common/language_detection_details.h"
 #include "components/translate/core/common/translate_constants.h"
 #include "components/translate/core/common/translate_pref_names.h"
 #include "components/translate/core/common/translate_switches.h"
 #include "components/translate/core/common/translate_util.h"
 #include "google_apis/google_api_keys.h"
+#include "net/base/network_change_notifier.h"
 #include "net/base/url_util.h"
 #include "net/http/http_status_code.h"
 
 namespace translate {
 
 namespace {
 
 // Callbacks for translate errors.
 TranslateManager::TranslateErrorCallbackList* g_callback_list_ = NULL;
 
@@ skipping 38 matching lines @@
 void TranslateManager::InitiateTranslation(const std::string& page_lang) {
   // Short-circuit out if not in a state where initiating translation makes
   // sense (this method may be called muhtiple times for a given page).
   if (!language_state_.page_needs_translation() ||
       language_state_.translation_pending() ||
       language_state_.translation_declined() ||
       language_state_.IsPageTranslated()) {
     return;
   }
 
+  // Also, skip if the connection is currently offline - initiation doesn't make
+  // sense there, either.
+  if (net::NetworkChangeNotifier::IsOffline())
+    return;
+
   if (!ignore_missing_key_for_testing_ &&
       !::google_apis::HasKeysConfigured()) {
     // Without an API key, translate won't work, so don't offer to translate
     // in the first place. Leave prefs::kEnableTranslate on, though, because
     // that settings syncs and we don't want to turn off translate everywhere
     // else.
     TranslateBrowserMetrics::ReportInitiationStatus(
         TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_KEY);
     return;
   }
@@ skipping 296 matching lines @@
 }
 
 bool TranslateManager::ignore_missing_key_for_testing_ = false;
 
 // static
 void TranslateManager::SetIgnoreMissingKeyForTesting(bool ignore) {
   ignore_missing_key_for_testing_ = ignore;
 }
 
 }  // namespace translate