1 files changed, 66 insertions, 0 deletions
diff --git a/third_party/libwebrtc/moz-patch-stack/0031.patch b/third_party/libwebrtc/moz-patch-stack/0031.patch
new file mode 100644
index 0000000000..00f1479dce
--- /dev/null
+++ b/third_party/libwebrtc/moz-patch-stack/0031.patch
@@ -0,0 +1,66 @@
+From: Randell Jesup <rjesup@wgate.com>
+Date: Sat, 11 Jul 2020 12:31:00 +0000
+Subject: Bug 1112392 - Move webrtc Tab Sharing to work in e10s/fission
+ r=dminor
+
+Also we drop support for an independent-of-scroll/viewport capture, which
+the old Tab Sharing supported, for security reasons (and we don't need it).
+
+Differential Revision: https://phabricator.services.mozilla.com/D80974
+Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/d57a030e6e3ae9ff56f14e8cc732b0e1d3869858
+---
+ modules/desktop_capture/desktop_capturer.cc | 11 +++++++++++
+ modules/desktop_capture/desktop_capturer.h  |  8 ++++++++
+ 2 files changed, 19 insertions(+)
+
+diff --git a/modules/desktop_capture/desktop_capturer.cc b/modules/desktop_capture/desktop_capturer.cc
+index 5211f1acec..4baa93cab9 100644
+--- a/modules/desktop_capture/desktop_capturer.cc
++++ b/modules/desktop_capture/desktop_capturer.cc
+@@ -101,6 +101,17 @@ std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateScreenCapturer(
+   return capturer;
+ }
+ 
++// static
++std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateTabCapturer(
++    const DesktopCaptureOptions& options) {
++  std::unique_ptr<DesktopCapturer> capturer = CreateRawTabCapturer(options);
++  if (capturer && options.detect_updated_region()) {
++    capturer.reset(new DesktopCapturerDifferWrapper(std::move(capturer)));
++  }
++
++  return capturer;
++}
++
+ #if defined(WEBRTC_USE_PIPEWIRE) || defined(WEBRTC_USE_X11)
+ bool DesktopCapturer::IsRunningUnderWayland() {
+   const char* xdg_session_type = getenv("XDG_SESSION_TYPE");
+diff --git a/modules/desktop_capture/desktop_capturer.h b/modules/desktop_capture/desktop_capturer.h
+index 6909a57891..cf75004af5 100644
+--- a/modules/desktop_capture/desktop_capturer.h
++++ b/modules/desktop_capture/desktop_capturer.h
+@@ -178,6 +178,10 @@ class RTC_EXPORT DesktopCapturer {
+   static std::unique_ptr<DesktopCapturer> CreateScreenCapturer(
+       const DesktopCaptureOptions& options);
+ 
++  // Creates a DesktopCapturer instance which targets to capture tab.
++  static std::unique_ptr<DesktopCapturer> CreateTabCapturer(
++      const DesktopCaptureOptions& options);
++
+ #if defined(WEBRTC_USE_PIPEWIRE) || defined(WEBRTC_USE_X11)
+   static bool IsRunningUnderWayland();
+ 
+@@ -203,6 +207,10 @@ class RTC_EXPORT DesktopCapturer {
+   // capture screens.
+   static std::unique_ptr<DesktopCapturer> CreateRawScreenCapturer(
+       const DesktopCaptureOptions& options);
++
++  // Creates a DesktopCapturer instance which targets to capture tabs
++  static std::unique_ptr<DesktopCapturer> CreateRawTabCapturer(
++      const DesktopCaptureOptions& options);
+ };
+ 
+ }  // namespace webrtc
+-- 
+2.34.1
+