Remove DesktopRegion parameter from DesktopCapturer::Capture

webrtc/modules/desktop_capture/screen_capturer_mac.mm

Index: webrtc/modules/desktop_capture/screen_capturer_mac.mm
diff --git a/webrtc/modules/desktop_capture/screen_capturer_mac.mm b/webrtc/modules/desktop_capture/screen_capturer_mac.mm
index 47885ee9d9d281fdb8b5019c8e59bf99343d14d4..a4074f6d51562057e9f56c9ca4ffcb243d9162ff 100644
--- a/webrtc/modules/desktop_capture/screen_capturer_mac.mm
+++ b/webrtc/modules/desktop_capture/screen_capturer_mac.mm
@@ -285,7 +285,7 @@ class ScreenCapturerMac : public ScreenCapturer {
 
   // Overridden from ScreenCapturer:
   void Start(Callback* callback) override;
-  void CaptureFrame() override;
+  void Capture() override;
   void SetExcludedWindow(WindowId window) override;
   bool GetScreenList(ScreenList* screens) override;
   bool SelectScreen(ScreenId id) override;
@@ -426,7 +426,7 @@ void ScreenCapturerMac::Start(Callback* callback) {
   callback_ = callback;
 }
 
-void ScreenCapturerMac::CaptureFrame() {
+void ScreenCapturerMac::Capture() {
   int64_t capture_start_time_nanos = rtc::TimeNanos();
 
   queue_.MoveToNextFrame();