Cleanup: move WebRTC related files from chrome/browser/media to chrome/browser/media/webrtc/

chrome/browser/media/desktop_media_list_ash.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 CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_
-#define CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_
-
-#include "base/memory/weak_ptr.h"
-#include "chrome/browser/media/desktop_media_list_base.h"
-#include "content/public/browser/desktop_media_id.h"
-
-namespace aura {
-class Window;
-}
-
-namespace gfx {
-class Image;
-}
-
-// Implementation of DesktopMediaList that shows native screens and
-// native windows.
-class DesktopMediaListAsh : public DesktopMediaListBase {
- public:
-  enum SourceTypes {
-    SCREENS = 1,
-    WINDOWS = 2,
-  };
-
-  explicit DesktopMediaListAsh(int source_types);
-  ~DesktopMediaListAsh() override;
-
- private:
-  // Override from DesktopMediaListBase.
-  void Refresh() override;
-  void EnumerateWindowsForRoot(
-      std::vector<DesktopMediaListAsh::SourceDescription>* windows,
-      aura::Window* root_window,
-      int container_id);
-  void EnumerateSources(
-      std::vector<DesktopMediaListAsh::SourceDescription>* windows);
-  void CaptureThumbnail(content::DesktopMediaID id, aura::Window* window);
-  void OnThumbnailCaptured(content::DesktopMediaID id,
-                           const gfx::Image& image);
-
-  int source_types_;
-
-  int pending_window_capture_requests_;
-
-  base::WeakPtrFactory<DesktopMediaListAsh> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DesktopMediaListAsh);
-};
-
-#endif  // CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_