diff --git a/third_party/libwebrtc/README.moz-ff-commit b/third_party/libwebrtc/README.moz-ff-commit
index 8b7cd2c0d488e..96f0ed337c631 100644
--- a/third_party/libwebrtc/README.moz-ff-commit
+++ b/third_party/libwebrtc/README.moz-ff-commit
@@ -13329,3 +13329,6 @@ ed21d96e13
 # MOZ_LIBWEBRTC_SRC=/home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src MOZ_LIBWEBRTC_COMMIT=mjfdev bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
 # base of lastest vendoring
 edbaf57bd4
+# MOZ_LIBWEBRTC_SRC=/home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src MOZ_LIBWEBRTC_COMMIT=mjfdev bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
+# base of lastest vendoring
+f8775cf269
diff --git a/third_party/libwebrtc/README.mozilla b/third_party/libwebrtc/README.mozilla
index 142b2429ea86b..685dff2c776b2 100644
--- a/third_party/libwebrtc/README.mozilla
+++ b/third_party/libwebrtc/README.mozilla
@@ -8898,3 +8898,5 @@ libwebrtc updated from /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwe
 libwebrtc updated from /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src commit mjfdev on 2022-07-13T18:58:11.746777.
 # python3 vendor-libwebrtc.py --from-local /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src --commit mjfdev libwebrtc
 libwebrtc updated from /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src commit mjfdev on 2022-07-13T18:58:53.750894.
+# python3 vendor-libwebrtc.py --from-local /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src --commit mjfdev libwebrtc
+libwebrtc updated from /home/mfroman/git-checkouts/trial-webrtc-builds/moz-libwebrtc-checkout/src commit mjfdev on 2022-07-13T18:59:33.589540.
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_and_cursor_composer.cc b/third_party/libwebrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
index 355bfacfbb891..bde91bd07bb0e 100644
--- a/third_party/libwebrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
@@ -218,7 +218,7 @@ void DesktopAndCursorComposer::OnCaptureResult(
         !desktop_capturer_->IsOccluded(cursor_position_)) {
       DesktopVector relative_position =
           cursor_position_.subtract(frame->top_left());
-#if defined(WEBRTC_MAC)
+#if defined(WEBRTC_MAC) || defined(CHROMEOS)
       // On OSX, the logical(DIP) and physical coordinates are used mixingly.
       // For example, the captured cursor has its size in physical pixels(2x)
       // and location in logical(DIP) pixels on Retina monitor. This will cause
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_frame.cc b/third_party/libwebrtc/modules/desktop_capture/desktop_frame.cc
index 65f77212e9a97..66f750d4b3b31 100644
--- a/third_party/libwebrtc/modules/desktop_capture/desktop_frame.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_frame.cc
@@ -112,7 +112,7 @@ DesktopRect DesktopFrame::rect() const {
 float DesktopFrame::scale_factor() const {
   float scale = 1.0f;
 
-#if defined(WEBRTC_MAC)
+#if defined(WEBRTC_MAC) || defined(CHROMEOS)
   // At least on Windows the logical and physical pixel are the same
   // See http://crbug.com/948362.
   if (!dpi().is_zero() && dpi().x() == dpi().y())