check network connectivity in onPageTranslated callback.

components/translate/core/browser/translate_manager_unittest.cc

 // Copyright 2015 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 <utility>
 
 #include "base/json/json_reader.h"
 #include "base/memory/ptr_util.h"
@@ skipping 350 matching lines @@
 
   // In the online case, InitiateTranslation will proceed past early out tests.
   network_notifier_.SimulateOnline();
   translate_manager_->InitiateTranslation("de");
   histogram_tester.ExpectUniqueSample(
       kMetricName,
       translate::TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS,
       1);
 }
 
+TEST_F(TranslateManagerTest, DontTranslateIfOfflineBeforeTranslate) {
+  TranslateManager::SetIgnoreMissingKeyForTesting(true);
+  translate_manager_.reset(new translate::TranslateManager(
+      &mock_translate_client_, &mock_translate_ranker_, kAcceptLanguages));
+  translate_manager_->GetLanguageState().LanguageDetermined("de", true);
+  translate_manager_->InitiateTranslation("de");
+
+  // Trigger translate page.
+  network_notifier_.SimulateOffline();
+  translate_manager_->TranslatePage("de", "en", false);
+
+  // Don't expect calls if network is off.
+  EXPECT_FALSE(driver_.TranslatePage_is_called());
+}
+
 // Utility function to set the threshold params
 void ChangeThresholdInParams(
     const char* initiate_translation_confidence_threshold,
     const char* initiate_translation_probability_threshold,
     const char* target_language_confidence_threshold,
     const char* target_language_probability_threshold) {
   ASSERT_TRUE(variations::AssociateVariationParams(
       kTrialName, "Enabled",
       {{"initiate_translation_ulp_confidence_threshold",
         initiate_translation_confidence_threshold},
@@ skipping 228 matching lines @@
           _))
       .WillOnce(Return(true));
   SetHasLanguageChanged(false);
   SetLanguageTooOftenDenied("en");
   EXPECT_FALSE(translate_manager_->ShouldSuppressBubbleUI(false, "en"));
 }
 
 }  // namespace testing
 
 }  // namespace translate