Delete all log messages depending on system_wrappers.

webrtc/modules/desktop_capture/cropping_window_capturer.cc

Index: webrtc/modules/desktop_capture/cropping_window_capturer.cc
diff --git a/webrtc/modules/desktop_capture/cropping_window_capturer.cc b/webrtc/modules/desktop_capture/cropping_window_capturer.cc
index 711fe0d1ba6224b2a52d0c7e238a22a976c705b2..ac4039015c020a25dd8bcf5efcedbc694f02d1a9 100644
--- a/webrtc/modules/desktop_capture/cropping_window_capturer.cc
+++ b/webrtc/modules/desktop_capture/cropping_window_capturer.cc
@@ -11,7 +11,6 @@
 #include "webrtc/modules/desktop_capture/cropping_window_capturer.h"
 
 #include "webrtc/modules/desktop_capture/cropped_desktop_frame.h"
-#include "webrtc/system_wrappers/include/logging.h"
 
 namespace webrtc {
 
@@ -77,20 +76,17 @@ void CroppingWindowCapturer::OnCaptureResult(
     DesktopCapturer::Result result,
     std::unique_ptr<DesktopFrame> screen_frame) {
   if (!ShouldUseScreenCapturer()) {
-    LOG(LS_INFO) << "Window no longer on top when ScreenCapturer finishes";
     window_capturer_->CaptureFrame();
     return;
   }
 
   if (result != Result::SUCCESS) {
-    LOG(LS_WARNING) << "ScreenCapturer failed to capture a frame";
     callback_->OnCaptureResult(result, nullptr);
     return;
   }
 
   DesktopRect window_rect = GetWindowRectInVirtualScreen();
   if (window_rect.is_empty()) {
-    LOG(LS_WARNING) << "Window rect is empty";
     callback_->OnCaptureResult(Result::ERROR_TEMPORARY, nullptr);
     return;
   }