Remove DesktopRegion parameter in DesktopCapturer::Capture.

webrtc/modules/desktop_capture/win/screen_capturer_win_magnifier.cc

 /*
  *  Copyright (c) 2014 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 54 matching lines @@
                          "magnifier initialization failed.";
     StartFallbackCapturer();
   }
 }
 
 void ScreenCapturerWinMagnifier::SetSharedMemoryFactory(
     std::unique_ptr<SharedMemoryFactory> shared_memory_factory) {
   shared_memory_factory_ = std::move(shared_memory_factory);
 }
 
-void ScreenCapturerWinMagnifier::Capture(const DesktopRegion& region) {
+void ScreenCapturerWinMagnifier::CaptureFrame() {
   if (!magnifier_initialized_ ||
       !magnifier_capture_succeeded_ ||
       GetSystemMetrics(SM_CMONITORS) != 1) {
     // Do not try to use the magnifier if it failed before and in multi-screen
     // setup (where the API crashes sometimes).
     LOG_F(LS_WARNING) << "Switching to the fallback screen capturer because "
                          "initialization or last capture attempt failed, or "
                          "execute on multi-screen system.";
     StartFallbackCapturer();
-    fallback_capturer_->Capture(region);
+    fallback_capturer_->CaptureFrame();
     return;
   }
 
   int64_t capture_start_time_nanos = rtc::TimeNanos();
 
   // Switch to the desktop receiving user input if different from the current
   // one.
   std::unique_ptr<Desktop> input_desktop(Desktop::GetInputDesktop());
   if (input_desktop.get() != NULL && !desktop_.IsSame(*input_desktop)) {
     // Release GDI resources otherwise SetThreadDesktop will fail.
     if (desktop_dc_) {
       ReleaseDC(NULL, desktop_dc_);
       desktop_dc_ = NULL;
     }
     // If SetThreadDesktop() fails, the thread is still assigned a desktop.
     // So we can continue capture screen bits, just from the wrong desktop.
     desktop_.SetThreadDesktop(input_desktop.release());
   }
 
   DesktopRect rect = GetScreenRect(current_screen_id_, current_device_key_);
   queue_.MoveToNextFrame();
   CreateCurrentFrameIfNecessary(rect.size());
   // CaptureImage may fail in some situations, e.g. windows8 metro mode. So
   // defer to the fallback capturer if magnifier capturer did not work.
   if (!CaptureImage(rect)) {
     LOG_F(LS_WARNING) << "Switching to the fallback screen capturer because "
                          "last capture attempt failed.";
     StartFallbackCapturer();
-    fallback_capturer_->Capture(region);
+    fallback_capturer_->CaptureFrame();
     return;
   }
 
   // Emit the current frame.
   std::unique_ptr<DesktopFrame> frame = queue_.current_frame()->Share();
   frame->set_dpi(DesktopVector(GetDeviceCaps(desktop_dc_, LOGPIXELSX),
                                GetDeviceCaps(desktop_dc_, LOGPIXELSY)));
   frame->mutable_updated_region()->SetRect(
       DesktopRect::MakeSize(frame->size()));
   frame->set_capture_time_ms((rtc::TimeNanos() - capture_start_time_nanos) /
@@ skipping 255 matching lines @@
   RTC_DCHECK(fallback_capturer_);
   if (!fallback_capturer_started_) {
     fallback_capturer_started_ = true;
 
     fallback_capturer_->Start(callback_);
     fallback_capturer_->SelectScreen(current_screen_id_);
   }
 }
 
 }  // namespace webrtc