Revert of Add mojo interface+impl creation of audio streams.

content/browser/renderer_host/media/renderer_audio_output_stream_factory_context_impl.h

-// Copyright 2017 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_RENDERER_AUDIO_OUTPUT_STREAM_FACTORY_CONTEXT_IMPL_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_RENDERER_AUDIO_OUTPUT_STREAM_FACTORY_CONTEXT_IMPL_H_
-
-#include <memory>
-#include <string>
-
-#include "content/browser/renderer_host/media/renderer_audio_output_stream_factory_context.h"
-#include "content/common/media/renderer_audio_output_stream_factory.mojom.h"
-#include "mojo/public/cpp/bindings/interface_request.h"
-#include "mojo/public/cpp/bindings/strong_binding_set.h"
-
-namespace media {
-class AudioManager;
-class AudioSystem;
-}  // namespace media
-
-namespace content {
-
-class MediaStreamManager;
-
-// In addition to being a RendererAudioOutputStreamFactoryContext, this class
-// also handles requests for mojom::RendererAudioOutputStreamFactory instances.
-//
-// Ownership diagram for stream IPC classes (excluding interfaces):
-// RendererAudioOutputStreamFactoryContext
-//                 ^
-//                 | owns (at most one per render frame in the process).
-//                 |
-// RenderFrameAudioOutputStreamFactory
-//                 ^
-//                 | owns (one per stream for the frame).
-//                 |
-// media::MojoAudioOutputStreamProvider
-//                 ^
-//                 | owns (one).
-//                 |
-// media::MojoAudioOutputStream
-
-class CONTENT_EXPORT RendererAudioOutputStreamFactoryContextImpl
-    : public RendererAudioOutputStreamFactoryContext {
- public:
-  RendererAudioOutputStreamFactoryContextImpl(
-      int render_process_id,
-      media::AudioSystem* audio_system,
-      media::AudioManager* audio_manager,
-      MediaStreamManager* media_stream_manager,
-      const std::string& salt);
-
-  ~RendererAudioOutputStreamFactoryContextImpl() override;
-
-  // Creates a factory and binds it to the request. Intended to be registered
-  // in a RenderFrameHosts InterfaceRegistry.
-  void CreateFactory(
-      int frame_host_id,
-      mojo::InterfaceRequest<mojom::RendererAudioOutputStreamFactory> request);
-
-  // RendererAudioOutputStreamFactoryContext implementation.
-  int GetRenderProcessId() const override;
-
-  std::string GetHMACForDeviceId(
-      const url::Origin& origin,
-      const std::string& raw_device_id) const override;
-
-  void RequestDeviceAuthorization(
-      int render_frame_id,
-      int session_id,
-      const std::string& device_id,
-      const url::Origin& security_origin,
-      AuthorizationCompletedCallback cb) const override;
-
-  std::unique_ptr<media::AudioOutputDelegate> CreateDelegate(
-      const std::string& unique_device_id,
-      int render_frame_id,
-      const media::AudioParameters& params,
-      media::AudioOutputDelegate::EventHandler* handler) override;
-
- private:
-  // Used for hashing the device_id.
-  const std::string salt_;
-  media::AudioSystem* const audio_system_;
-  media::AudioManager* const audio_manager_;
-  MediaStreamManager* const media_stream_manager_;
-  const AudioOutputAuthorizationHandler authorization_handler_;
-  const int render_process_id_;
-
-  // All streams requires ids for logging, so we keep a count for that.
-  int next_stream_id_ = 0;
-
-  // The factories created by |this| is kept here, so that we can make sure they
-  // don't keep danging references to |this|.
-  mojo::StrongBindingSet<mojom::RendererAudioOutputStreamFactory> factories_;
-
-  DISALLOW_COPY_AND_ASSIGN(RendererAudioOutputStreamFactoryContextImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_RENDERER_AUDIO_OUTPUT_STREAM_FACTORY_CONTEXT_IMPL_H_