mus: Implement Window Server Capture

components/mus/public/cpp/lib/in_flight_change.cc

Index: components/mus/public/cpp/lib/in_flight_change.cc
diff --git a/components/mus/public/cpp/lib/in_flight_change.cc b/components/mus/public/cpp/lib/in_flight_change.cc
index 8e3b8de572229e9b3a0624993d00c0303cc4e97b..3383960f757035b5c95e8f4adfe7302f13d984e1 100644
--- a/components/mus/public/cpp/lib/in_flight_change.cc
+++ b/components/mus/public/cpp/lib/in_flight_change.cc
@@ -59,6 +59,25 @@ void CrashInFlightChange::Revert() {
   CHECK(false);
 }
 
+// InFlightCaptureChange ------------------------------------------------------
+
+InFlightCaptureChange::InFlightCaptureChange(Window* window, bool revert_value)
+    : InFlightChange(
+          window,
+          revert_value ? ChangeType::RELEASE_CAPTURE : ChangeType::SET_CAPTURE),
+      revert_value_(revert_value) {}
+
+InFlightCaptureChange::~InFlightCaptureChange() {}
+
+void InFlightCaptureChange::SetRevertValueFrom(const InFlightChange& change) {
+  revert_value_ =
+      static_cast<const InFlightCaptureChange&>(change).revert_value_;
+}
+
+void InFlightCaptureChange::Revert() {
+  WindowPrivate(window()).LocalSetCapture(revert_value_);
+}
+
 // InFlightFocusChange --------------------------------------------------------
 
 InFlightFocusChange::InFlightFocusChange(WindowTreeClientImpl* connection,