Remove Password Authentication code that is no longer used.

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

Index: chrome/browser/ui/android/infobars/confirm_infobar.h
diff --git a/chrome/browser/ui/android/infobars/confirm_infobar.h b/chrome/browser/ui/android/infobars/confirm_infobar.h
index 6284d377eea8e484324ddcf9c127a1b13458d5df..55e43d4120b645d4e2cf7476a3f54db3ea30a4de 100644
--- a/chrome/browser/ui/android/infobars/confirm_infobar.h
+++ b/chrome/browser/ui/android/infobars/confirm_infobar.h
@@ -15,7 +15,7 @@ class ConfirmInfoBar : public InfoBarAndroid {
   explicit ConfirmInfoBar(scoped_ptr<ConfirmInfoBarDelegate> delegate);
   virtual ~ConfirmInfoBar();
 
- protected:
+ private:
   // InfoBarAndroid:
   virtual base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
       JNIEnv* env) override;
@@ -25,7 +25,6 @@ class ConfirmInfoBar : public InfoBarAndroid {
 
   base::string16 GetTextFor(ConfirmInfoBarDelegate::InfoBarButton button);
 
- private:
   ConfirmInfoBarDelegate* GetDelegate();
 
   base::android::ScopedJavaGlobalRef<jobject> java_confirm_delegate_;