Make PermissionRequestManager::requests_ correspond to the active prompt

chrome/browser/permissions/permission_request_manager.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 CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_MANAGER_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_MANAGER_H_
 
 #include <unordered_map>
 #include <vector>
 
@@ skipping 127 matching lines @@
   // PermissionPrompt::Delegate:
   void ToggleAccept(int request_index, bool new_value) override;
   void TogglePersist(bool new_value) override;
   void Accept() override;
   void Deny() override;
   void Closing() override;
 
   // Posts a task which will allow the bubble to become visible if it is needed.
   void ScheduleShowBubble();
 
-  // Shows the bubble if it is not already visible and there are pending
-  // requests.
-  void TriggerShowBubble();
+  // If we aren't already showing a bubble, dequeue and show a pending request.
+  void DequeueRequestsAndShowBubble();
+
+  // Shows the bubble for a request that has just been dequeued, or re-show a
+  // bubble after switching tabs away and back.
+  void ShowBubble();
 
   // Finalize the pending permissions request.
   void FinalizeBubble();
 
   // Cancel any pending requests. This is called if the WebContents
   // on which permissions calls are pending is destroyed or navigated away
   // from the requesting page.
   void CancelPendingQueues();
 
   // Searches |requests_|, |queued_requests_| and |queued_frame_requests_| - but
@@ skipping 37 matching lines @@
   // Whether each of the requests in |requests_| is accepted by the user.
   std::vector<bool> accept_states_;
 
   base::ObserverList<Observer> observer_list_;
   AutoResponseType auto_response_for_test_;
 
   base::WeakPtrFactory<PermissionRequestManager> weak_factory_;
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_MANAGER_H_