Replace MediaStreamUIController with MediaStreamUIProxy.

content/browser/renderer_host/media/media_stream_ui_proxy.h

+// Copyright 2013 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_STREAM_UI_PROXY_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_UI_PROXY_H_
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "content/public/common/media_stream_request.h"
+
+namespace content {
+
+class RenderViewHostDelegate;
+
+// MediaStreamUIProxy proxies calls to media stream UI between IO thread and UI
+// thread. One instance of this class is create per MediaStream object. It must
+// be create, used and destroyed on IO thread.
+class CONTENT_EXPORT MediaStreamUIProxy {
+ public:
+  typedef base::Callback<
+      void (const MediaStreamDevices& devices)> ResponseCallback;
+
+  static scoped_ptr<MediaStreamUIProxy> Create();
+  static scoped_ptr<MediaStreamUIProxy> CreateForTests(
+      RenderViewHostDelegate* render_delegate);
+
+  virtual ~MediaStreamUIProxy();
+
+  // Requests access for the MediaStream by calling
+  // WebContentsDelegate::RequestMediaAccessPermission(). The specified
+  // |response_callback| is called when the WebContentsDelegate approves or
+  // denies request.
+  virtual void RequestAccess(const MediaStreamRequest& request,
+                             const ResponseCallback& response_callback);
+
+  // Notifies the UI that the MediaStream has been started. Must be called after
+  // access has been approved using RequestAccess(). |stop_callback| is be
+  // called on the IO thread after the user has requests the stream to be
+  // stopped.
+  virtual void OnStarted(const base::Closure& stop_callback);
+
+  void SetRenderViewHostDelegateForTests(RenderViewHostDelegate* delegate);
+
+ protected:
+  MediaStreamUIProxy(RenderViewHostDelegate* test_render_delegate);
+
+ private:
+  class Core;
+  friend class Core;
+  friend class FakeMediaStreamUIProxy;
+
+  void ProcessAccessRequestResponse(const MediaStreamDevices& devices);
+  void ProcessStopRequestFromUI();
+
+  scoped_ptr<Core> core_;
+  ResponseCallback response_callback_;
+  base::Closure stop_callback_;
+
+  base::WeakPtrFactory<MediaStreamUIProxy> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamUIProxy);
+};
+
+class CONTENT_EXPORT FakeMediaStreamUIProxy : public MediaStreamUIProxy {
+ public:
+  explicit FakeMediaStreamUIProxy();
+  virtual ~FakeMediaStreamUIProxy();
+
+  void SetAvailableDevices(const MediaStreamDevices& devices);
+
+  // MediaStreamUIProxy overrides.
+  virtual void RequestAccess(
+      const MediaStreamRequest& request,
+      const ResponseCallback& response_callback) OVERRIDE;
+  virtual void OnStarted(const base::Closure& stop_callback) OVERRIDE;
+
+ private:
+  MediaStreamDevices devices_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeMediaStreamUIProxy);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_UI_PROXY_H_