Windows video capture: Remove duplicated code from GetDeviceSupportedFormats*

media/video/capture/win/video_capture_device_win.cc

 // 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.
 
 #include "media/video/capture/win/video_capture_device_win.h"
 
 #include <ks.h>
 #include <ksmedia.h>
 
 #include <algorithm>
@@ skipping 536 matching lines @@
               ? (kSecondsToReferenceTime / static_cast<float>(time_per_frame))
               : 0.0;
 
       capabilities_.emplace_back(stream_index, format);
     }
   }
 
   return !capabilities_.empty();
 }
 
+void VideoCaptureDeviceWin::GetDeviceSupportedFormats(
+    VideoCaptureFormats* formats) {
+  DCHECK(formats);
+  for (const CapabilityWin& capability : capabilities_)
+    formats->push_back(capability.supported_format);
+}
+
 // Set the power line frequency removal in |capture_filter_| if available.
 void VideoCaptureDeviceWin::SetAntiFlickerInCaptureFilter() {
   const int power_line_frequency = GetPowerLineFrequencyForLocation();
   if (power_line_frequency != kPowerLine50Hz &&
       power_line_frequency != kPowerLine60Hz) {
     return;
   }
   ScopedComPtr<IKsPropertySet> ks_propset;
   DWORD type_support = 0;
   HRESULT hr;
@@ skipping 73 matching lines @@
     return E_FAIL;
   return S_OK;
 }
 
 void VideoCaptureDeviceWin::SetErrorState(const std::string& reason) {
   DCHECK(CalledOnValidThread());
   state_ = kError;
   client_->OnError(reason);
 }
 }  // namespace media