Automatically trigger Always-Translate in new translation infobar

chrome/browser/ui/android/infobars/translate_compact_infobar.h

Index: chrome/browser/ui/android/infobars/translate_compact_infobar.h
diff --git a/chrome/browser/ui/android/infobars/translate_compact_infobar.h b/chrome/browser/ui/android/infobars/translate_compact_infobar.h
index 90ebd30e6cdab9dd2cd0970c0614ea39a42af5ab..b9aa44ad6b1f24fc896f9a652c94f664742a0541 100644
--- a/chrome/browser/ui/android/infobars/translate_compact_infobar.h
+++ b/chrome/browser/ui/android/infobars/translate_compact_infobar.h
@@ -36,6 +36,9 @@ class TranslateCompactInfoBar
                                 int option,
                                 jboolean value);
 
+  // Check whether we should automatically trigger "Always Translate"
+  bool ShouldAutoAlwaysTranslate();
+
   // ContentTranslateDriver::Observer implementation.
   void OnPageTranslated(const std::string& original_lang,
                         const std::string& translated_lang,
@@ -52,6 +55,10 @@ class TranslateCompactInfoBar
   translate::TranslateInfoBarDelegate* GetDelegate();
   translate::ContentTranslateDriver* translate_driver_;
 
+  // If number of consecutive translations is equal to this number, infobar will
+  // automatically trigger "Always Translate"
+  const int kAcceptCountThreshold = 5;
+
   DISALLOW_COPY_AND_ASSIGN(TranslateCompactInfoBar);
 };