Remove DesktopRegion parameter in DesktopCapturer::Capture.

webrtc/modules/desktop_capture/fake_desktop_capturer.h

 /*
  *  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 44 matching lines @@
   // not take the ownership of |generator|.
   void set_frame_generator(DesktopFrameGenerator* generator) {
     generator_ = generator;
   }
 
   // DesktopCapturer interface
   void Start(DesktopCapturer::Callback* callback) override {
     callback_ = callback;
   }
 
-  void Capture(const DesktopRegion& region) override {
+  void CaptureFrame() override {
     if (generator_) {
       std::unique_ptr<DesktopFrame> frame(
           generator_->GetNextFrame(shared_memory_factory_.get()));
       if (frame) {
         callback_->OnCaptureResult(result_, std::move(frame));
       } else {
         callback_->OnCaptureResult(DesktopCapturer::Result::ERROR_TEMPORARY,
                                    nullptr);
       }
       return;
@@ skipping 10 matching lines @@
  private:
   DesktopCapturer::Callback* callback_;
   std::unique_ptr<SharedMemoryFactory> shared_memory_factory_;
   DesktopCapturer::Result result_;
   DesktopFrameGenerator* generator_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_FAKE_DESKTOP_CAPTURER_H_