Migrate MediaDevices.enumerateDevices to Mojo

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/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);
+  ~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;
+
+ private:
+  // Friend the unit test to allow it to manually set the UI proxy.
+  friend class MediaDevicesDispatcherHostTest;

[hta - Chromium, 2016/09/30 08:38:12]

If this is the only reason to friend the unit test, I'd rather expose a method
called SetFakeUiProxyForTesting(fake_proxy).

[Guido Urdaneta, 2016/10/07 17:07:13]

Done.

+
+  // 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&)>;
+
+  void AudioAccessChecked(std::unique_ptr<MediaStreamUIProxy> ui_proxy,
+                          bool check_video_permission,
+                          const url::Origin& security_origin,
+                          AccessCheckedCallback callback,
+                          bool has_audio_permission);
+  void VideoAccessChecked(std::unique_ptr<MediaStreamUIProxy> ui_proxy,
+                          bool has_audio_permission,
+                          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();
+  void SetFakeUIProxy(std::unique_ptr<MediaStreamUIProxy> fake_ui_proxy);
+
+  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_;
+
+  base::WeakPtrFactory<MediaDevicesDispatcherHost> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaDevicesDispatcherHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_DEVICES_DISPATCHER_HOST_H_