Convert the WebRtcTestBase to use infobar and bubble autoresponders

chrome/browser/infobars/infobar_responder.h

 // Copyright 2015 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_INFOBARS_INFOBAR_RESPONDER_H_
 #define CHROME_BROWSER_INFOBARS_INFOBAR_RESPONDER_H_
 
 #include "base/macros.h"
 #include "components/infobars/core/infobar_manager.h"
 
 namespace infobars {
 class InfoBar;
 }
 
 class ConfirmInfoBarDelegate;
 class InfoBarService;
 
 // Used by test code to asynchronously respond to the first infobar shown, which
 // must have a ConfirmInfoBarDelegate. This can be used to ensure various
 // interaction flows work correctly.
 //
 // The asynchronous response matches how real users will use the infobar.
 class InfoBarResponder : public infobars::InfoBarManager::Observer {
  public:
-  // If |should_accept| is true, the responder will asynchronously Accept() the
-  // infobar; otherwise it will Cancel() it.
-  InfoBarResponder(InfoBarService* infobar_service, bool should_accept);
+  enum AutoResponseType {
+    ACCEPT,
+    DENY,
+    DISMISS
+  };
+
+  // The responder will asynchronously perform the requested |response|.
+  InfoBarResponder(InfoBarService* infobar_service, AutoResponseType response);
   ~InfoBarResponder() override;
 
   // infobars::InfoBarManager::Observer:
   void OnInfoBarAdded(infobars::InfoBar* infobar) override;
+  void OnInfoBarReplaced(infobars::InfoBar* old_infobar,
+                         infobars::InfoBar* new_infobar) override;
 
  private:
   void Respond(ConfirmInfoBarDelegate* delegate);
 
   InfoBarService* infobar_service_;
-  bool should_accept_;
+  AutoResponseType response_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarResponder);
 };
 
 #endif  // CHROME_BROWSER_INFOBARS_INFOBAR_RESPONDER_H_