Change the TranslateDeclined() to only count decline if the explicit_closed is set to true

components/translate/core/browser/translate_ui_delegate.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_TRANSLATE_UI_DELEGATE_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_UI_DELEGATE_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 70 matching lines @@
   // Returns the displayable name for the language at |index|.
   base::string16 GetLanguageNameAt(size_t index) const;
 
   // Starts translating the current page.
   void Translate();
 
   // Reverts translation.
   void RevertTranslation();
 
   // Processes when the user declines translation.
+  // The function name is not accurate. It only means the user did not take
+  // affirmative action after the translation ui show up. The user either
+  // actively decline the translation or ignore the prompt of translation.
+  //   Pass |explicitly_closed| as true if user explicityly decline the
+  //     translation.
+  //   Pass |explicitly_closed| as false if the translation UI is dismissed
+  //     implicit by some user actions which ignore the translation UI,
+  //     such as switch to a new tab/window or navigate to another page by
+  //     click a link.
   void TranslationDeclined(bool explicitly_closed);
 
   // Returns true if the current language is blocked.
   bool IsLanguageBlocked();
 
   // Sets the value if the current language is blocked.
   void SetLanguageBlocked(bool value);
 
   // Returns true if the current webpage is blacklisted.
   bool IsSiteBlacklisted();
@@ skipping 39 matching lines @@
 
   // The translation related preferences.
   scoped_ptr<TranslatePrefs> prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateUIDelegate);
 };
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_UI_DELEGATE_H_