Remove DesktopRegion parameter in DesktopCapturer::Capture.

webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 36 matching lines @@
 
 DesktopSize ScreenCapturerWinDirectx::SelectedDesktopSize() const {
   if (current_screen_id == kFullDesktopScreenId) {
     return DxgiDuplicatorController::Instance()->desktop_size();
   }
   return DxgiDuplicatorController::Instance()
       ->ScreenRect(current_screen_id)
       .size();
 }
 
-void ScreenCapturerWinDirectx::Capture(const DesktopRegion& region) {
+void ScreenCapturerWinDirectx::CaptureFrame() {
   RTC_DCHECK(callback_);
 
   int64_t capture_start_time_nanos = rtc::TimeNanos();
 
   frames_.MoveToNextFrame();
   if (!frames_.current_frame()) {
     std::unique_ptr<DesktopFrame> new_frame;
     if (shared_memory_factory_) {
       new_frame = SharedMemoryDesktopFrame::Create(
           SelectedDesktopSize(), shared_memory_factory_.get());
@@ skipping 63 matching lines @@
 
   int screen_count = DxgiDuplicatorController::Instance()->ScreenCount();
   if (id >= 0 && id < screen_count) {
     current_screen_id = id;
     return true;
   }
   return false;
 }
 
 }  // namespace webrtc