Hide protocol handler icon in location bar after user is done

chrome/browser/ui/content_settings/content_setting_bubble_model.h

 // Copyright (c) 2012 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_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_
 #define CHROME_BROWSER_UI_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 242 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ContentSettingSimpleBubbleModel);
 };
 
 // RPH stands for Register Protocol Handler.
 class ContentSettingRPHBubbleModel : public ContentSettingSimpleBubbleModel {
  public:
   ContentSettingRPHBubbleModel(Delegate* delegate,
                                content::WebContents* web_contents,
                                Profile* profile,
                                ProtocolHandlerRegistry* registry);
+  ~ContentSettingRPHBubbleModel() override;
 
   void OnRadioClicked(int radio_index) override;
   void OnDoneClicked() override;
 
  private:
   void RegisterProtocolHandler();
   void UnregisterProtocolHandler();
   void IgnoreProtocolHandler();
   void ClearOrSetPreviousHandler();
 
   int selected_item_;
+  // Initially false, set to true if the user explicitly interacts with the
+  // bubble.
+  bool interacted_;
   ProtocolHandlerRegistry* registry_;
   ProtocolHandler pending_handler_;
   ProtocolHandler previous_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingRPHBubbleModel);
 };
 
 // The model of the content settings bubble for media settings.
 class ContentSettingMediaStreamBubbleModel : public ContentSettingBubbleModel {
  public:
@@ skipping 44 matching lines @@
   // The content settings that are associated with the individual radio
   // buttons.
   ContentSetting radio_item_setting_[2];
   // The state of the microphone and camera access.
   TabSpecificContentSettings::MicrophoneCameraState state_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingMediaStreamBubbleModel);
 };
 
 #endif  // CHROME_BROWSER_UI_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_