Public Sessions - prompt the user for pageCapture requests

chrome/browser/media/webrtc/public_session_tab_capture_access_handler.h

 // Copyright 2016 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_MEDIA_WEBRTC_PUBLIC_SESSION_TAB_CAPTURE_ACCESS_HANDLER_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_PUBLIC_SESSION_TAB_CAPTURE_ACCESS_HANDLER_H_
 
 #include "base/macros.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/media/capture_access_handler_base.h"
 #include "chrome/browser/media/webrtc/tab_capture_access_handler.h"
 #include "content/public/common/media_stream_request.h"
 #include "extensions/common/extension_id.h"
 
 // MediaAccessHandler for TabCapture API in Public Sessions. This class is
 // implemented as a wrapper around TabCaptureAccessHandler. It allows for finer
 // access control to the TabCapture manifest permission feature inside of Public
 // Sessions.
 //
 // In Public Sessions, extensions (and apps) are force-installed by admin policy
 // so the user does not get a chance to review the permissions for these
 // extensions. This is not acceptable from a security/privacy standpoint, so
 // when an extension uses the TabCapture API for the first time, we show the
 // user a dialog where they can choose whether to allow the extension access to
 // the API.
-//
-// TODO(isandrk): Refactor common code out of this class and
-// PublicSessionMediaAccessHandler (crbug.com/672620).
 class PublicSessionTabCaptureAccessHandler : public CaptureAccessHandlerBase {
  public:
   PublicSessionTabCaptureAccessHandler();
   ~PublicSessionTabCaptureAccessHandler() override;
 
   // MediaAccessHandler implementation.
   bool SupportsStreamType(const content::MediaStreamType type,
                           const extensions::Extension* extension) override;
   bool CheckMediaAccessPermission(
       content::WebContents* web_contents,
       const GURL& security_origin,
       content::MediaStreamType type,
       const extensions::Extension* extension) override;
   void HandleRequest(content::WebContents* web_contents,
                      const content::MediaStreamRequest& request,
                      const content::MediaResponseCallback& callback,
                      const extensions::Extension* extension) override;
 
  private:
   // Helper function used to chain the HandleRequest call into the original
   // inside of TabCaptureAccessHandler.
   void ChainHandleRequest(content::WebContents* web_contents,
                           const content::MediaStreamRequest& request,
                           const content::MediaResponseCallback& callback,
                           const extensions::Extension* extension);
 
-  // Function used to resolve user decision regarding allowing tab capture.
-  void ResolvePermissionPrompt(content::WebContents* web_contents,
-                               const content::MediaStreamRequest& request,
-                               const content::MediaResponseCallback& callback,
-                               const extensions::Extension* extension,
-                               ExtensionInstallPrompt::Result prompt_result);
-
-  // Class used to cache user choice regarding allowing tab capture.
-  class UserChoice {
-   public:
-    // Helper function for checking if tab capture is allowed by user choice.
-    bool IsAllowed() const;
-    // Helper function which returns true if user choice wasn't prompted yet.
-    bool NeedsPrompting() const;
-    void Set(bool allowed);
-    void SetPrompted();
-
-   private:
-    bool tab_capture_prompted_ = false;
-    bool tab_capture_allowed_ = false;
-  };
-
-  std::map<extensions::ExtensionId, UserChoice> user_choice_cache_;
-  std::map<extensions::ExtensionId, std::unique_ptr<ExtensionInstallPrompt>>
-      extension_install_prompt_map_;
   TabCaptureAccessHandler tab_capture_access_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(PublicSessionTabCaptureAccessHandler);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_PUBLIC_SESSION_TAB_CAPTURE_ACCESS_HANDLER_H_