Make PermissionRequestManager::requests_ correspond to the active prompt

chrome/browser/ui/cocoa/permission_bubble/permission_bubble_cocoa.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_UI_COCOA_PERMISSION_BUBBLE_PERMISSION_BUBBLE_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_PERMISSION_BUBBLE_PERMISSION_BUBBLE_COCOA_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/gtest_prod_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/cocoa/info_bubble_view.h"
 #include "chrome/browser/ui/permission_bubble/permission_prompt.h"
 #include "content/public/browser/web_contents.h"
 
 class Browser;
 @class PermissionBubbleController;
 
 class PermissionBubbleCocoa : public PermissionPrompt {
  public:
   explicit PermissionBubbleCocoa(Browser* browser);
   ~PermissionBubbleCocoa() override;
 
   // PermissionPrompt:
   void Show(const std::vector<PermissionRequest*>& requests,
             const std::vector<bool>& accept_state) override;
   void Hide() override;
-  bool IsVisible() override;
   void SetDelegate(Delegate* delegate) override;
   bool CanAcceptRequestUpdate() override;
   bool HidesAutomatically() override;
   void UpdateAnchorPosition() override;
   gfx::NativeWindow GetNativeWindow() override;
 
   // Called when |bubbleController_| is closing.
   void OnBubbleClosing();
 
  private:
@@ skipping 10 matching lines @@
   Browser* browser_;    // Weak.
   Delegate* delegate_;  // Weak.
 
   // Cocoa-side UI controller for the bubble.  Weak, as it will close itself.
   PermissionBubbleController* bubbleController_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionBubbleCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_PERMISSION_BUBBLE_PERMISSION_BUBBLE_COCOA_H_