Introduce MediaDevicesPermissionChecker.

content/browser/renderer_host/media/media_devices_dispatcher_host.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_DEVICES_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_DEVICES_DISPATCHER_HOST_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
+#include "content/browser/media/media_devices_permission_checker.h"
 #include "content/browser/renderer_host/media/media_devices_manager.h"
 #include "content/common/content_export.h"
 #include "content/common/media/media_devices.mojom.h"
 
 using ::mojom::MediaDeviceType;
 
 namespace url {
 class Origin;
 }
 
 namespace content {
 
 class MediaStreamManager;
-class MediaStreamUIProxy;
 
 class CONTENT_EXPORT MediaDevicesDispatcherHost
     : public ::mojom::MediaDevicesDispatcherHost {
  public:
   MediaDevicesDispatcherHost(int render_process_id,
                              int routing_id,
                              const std::string& device_id_salt,
-                             MediaStreamManager* media_stream_manager,
-                             bool use_fake_ui);
+                             MediaStreamManager* media_stream_manager);
   ~MediaDevicesDispatcherHost() override;
 
   static void Create(int render_process_id,
                      int routing_id,
                      const std::string& device_id_salt,
                      MediaStreamManager* media_stream_manager,
-                     bool use_fake_ui,
                      ::mojom::MediaDevicesDispatcherHostRequest request);
 
   // ::mojom::MediaDevicesDispatcherHost implementation.
   void EnumerateDevices(
       bool request_audio_input,
       bool request_video_input,
       bool request_audio_output,
       const url::Origin& security_origin,
       const EnumerateDevicesCallback& client_callback) override;
 
-  // Sets a MediaStreamUIProxy to be used in a single run of EnumerateDevices(),
-  // provided that the MediaDevicesDispatcherHost was created with |use_fake_ui|
-  // set to true. Subsequent runs of EnumerateDevices() use a new internally
-  // generated fake MediaStreamUIProxy.
-  // |fake_ui_proxy| is ignored if the MediaDevicesDispatcherHost was created
-  // with |use_fake_ui|, in which case a real MediaStreamUIProxy will be used
-  // instead.
-  // This function is intended to be used for testing.
-  void SetFakeUIProxyForTesting(
-      std::unique_ptr<MediaStreamUIProxy> fake_ui_proxy);
+  void SetPermissionChecker(
+      const MediaDevicesPermissionChecker& permission_checker);
 
  private:
-  // Internal type that represents a callback that receives a
-  // MediaDevicesManager::BoolDeviceTypes containing the permissions for each
-  // device type.
-  using AccessCheckedCallback =
-      base::Callback<void(const MediaDevicesManager::BoolDeviceTypes&)>;
-
-  // Currently, the same permission (MEDIA_DEVICE_AUDIO_CAPTURE) is used for
-  // both audio input and output.
-  // TODO(guidou): use specific permission for audio output when it becomes
-  // available. See http://crbug.com/556542.
-  void CheckAccess(bool check_audio,
-                   bool check_video_input,
-                   const url::Origin& security_origin,
-                   const AccessCheckedCallback& callback);
-
-  void AudioAccessChecked(std::unique_ptr<MediaStreamUIProxy> ui_proxy,
-                          bool check_video_permission,
-                          const url::Origin& security_origin,
-                          const AccessCheckedCallback& callback,
-                          bool has_audio_permission);
-
-  void VideoAccessChecked(std::unique_ptr<MediaStreamUIProxy> ui_proxy,
-                          bool has_audio_permission,
-                          const AccessCheckedCallback& callback,
-                          bool has_video_permission);
-
   void DoEnumerateDevices(
       const MediaDevicesManager::BoolDeviceTypes& requested_types,
       const url::Origin& security_origin,
       const EnumerateDevicesCallback& client_callback,
       const MediaDevicesManager::BoolDeviceTypes& permissions);
 
   void DevicesEnumerated(
       const MediaDevicesManager::BoolDeviceTypes& requested_types,
       const url::Origin& security_origin,
       const EnumerateDevicesCallback& client_callback,
       const MediaDevicesManager::BoolDeviceTypes& has_permissions,
       const MediaDeviceEnumeration& enumeration);
 
-  std::unique_ptr<MediaStreamUIProxy> GetUIProxy();
-
   int render_process_id_;
   int routing_id_;
   std::string device_id_salt_;
   std::string group_id_salt_;
   MediaStreamManager* media_stream_manager_;
-  bool use_fake_ui_;
-  std::unique_ptr<MediaStreamUIProxy> fake_ui_proxy_;
+  MediaDevicesPermissionChecker permission_checker_;
 
   base::WeakPtrFactory<MediaDevicesDispatcherHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaDevicesDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_DEVICES_DISPATCHER_HOST_H_