check network connectivity in onPageTranslated callback.

components/translate/core/browser/mock_translate_driver.h

 // 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.
 
 #ifndef COMPONENTS_TRANSLATE_CORE_BROWSER_MOCK_TRANSLATE_DRIVER_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_MOCK_TRANSLATE_DRIVER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 16 matching lines @@
 
   void OnIsPageTranslatedChanged() override;
 
   void OnTranslateEnabledChanged() override;
 
   bool IsLinkNavigation() override;
 
   void TranslatePage(int page_seq_no,
                      const std::string& translate_script,
                      const std::string& source_lang,
-                     const std::string& target_lang) override {}
+                     const std::string& target_lang) override;
 
   void RevertTranslation(int page_seq_no) override {}
 
   bool IsIncognito() override;
 
   const std::string& GetContentsMimeType() override;
 
   const GURL& GetLastCommittedURL() override;
 
   const GURL& GetVisibleURL() override;
 
   bool HasCurrentPage() override;
 
   void OpenUrlInNewTab(const GURL& url) override {}
 
   bool on_is_page_translated_changed_called() const {
     return on_is_page_translated_changed_called_;
   }
 
   bool on_translate_enabled_changed_called() const {
     return on_translate_enabled_changed_called_;
   }
 
+  bool TranslatePage_is_called() const { return translate_page_is_called_; }
+
  private:
   bool on_is_page_translated_changed_called_;
   bool on_translate_enabled_changed_called_;
+  bool translate_page_is_called_;
   LanguageState language_state_;
 
   DISALLOW_COPY_AND_ASSIGN(MockTranslateDriver);
 };
 
 }  // namespace testing
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_MOCK_TRANSLATE_DRIVER_H_