Win Video Capture: add support for enumerating DirectShow WDM devices

media/video/capture/video_capture_device.h

 // Copyright (c) 2012 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.
 //
 // VideoCaptureDevice is the abstract base class for realizing video capture
 // device support in Chromium. It provides the interface for OS dependent
 // implementations.
 // The class is created and functions are invoked on a thread owned by
 // VideoCaptureManager. Capturing is done on other threads, depending on the OS
 // specific implementation.
@@ skipping 28 matching lines @@
   class MEDIA_EXPORT Name {
    public:
     Name();
     Name(const std::string& name, const std::string& id);
 
 #if defined(OS_WIN)
     // Windows targets Capture Api type: it can only be set on construction.
     enum CaptureApiType {
       MEDIA_FOUNDATION,
       DIRECT_SHOW,
+      DIRECT_SHOW_WDM,
       API_TYPE_UNKNOWN
     };
 #endif
 #if defined(OS_MACOSX)
     // Mac targets Capture Api type: it can only be set on construction.
     enum CaptureApiType {
       AVFOUNDATION,
       QTKIT,
       API_TYPE_UNKNOWN
     };
@@ skipping 199 matching lines @@
   int GetPowerLineFrequencyForLocation() const;
 
  protected:
   static const int kPowerLine50Hz = 50;
   static const int kPowerLine60Hz = 60;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_H_