Remove Password Authentication code that is no longer used.

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

 // Copyright 2013 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 CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_
 #define CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/android/infobars/infobar_android.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
 class ConfirmInfoBar : public InfoBarAndroid {
  public:
   explicit ConfirmInfoBar(scoped_ptr<ConfirmInfoBarDelegate> delegate);
   virtual ~ConfirmInfoBar();
 
- protected:
+ private:
   // InfoBarAndroid:
   virtual base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
       JNIEnv* env) override;
   virtual void OnLinkClicked(JNIEnv* env, jobject obj) override;
   virtual void ProcessButton(int action,
                              const std::string& action_value) override;
 
   base::string16 GetTextFor(ConfirmInfoBarDelegate::InfoBarButton button);
 
- private:
   ConfirmInfoBarDelegate* GetDelegate();
 
   base::android::ScopedJavaGlobalRef<jobject> java_confirm_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfirmInfoBar);
 };
 
 // Registers native methods.
 bool RegisterConfirmInfoBarDelegate(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_