Remove mojo::Array.

services/ui/public/cpp/in_flight_change.h

Index: services/ui/public/cpp/in_flight_change.h
diff --git a/services/ui/public/cpp/in_flight_change.h b/services/ui/public/cpp/in_flight_change.h
index 649aa542340fe297a7d760d563d8f9ba0b014692..ad14be96baf548764cfebde0dde6fb44d9dd7f9d 100644
--- a/services/ui/public/cpp/in_flight_change.h
+++ b/services/ui/public/cpp/in_flight_change.h
@@ -13,7 +13,6 @@
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
-#include "mojo/public/cpp/bindings/array.h"
 #include "services/ui/public/cpp/window_observer.h"
 #include "ui/gfx/geometry/rect.h"
 
@@ -232,9 +231,10 @@ class InFlightFocusChange : public InFlightWindowTreeClientChange {
 
 class InFlightPropertyChange : public InFlightChange {
  public:
-  InFlightPropertyChange(Window* window,
-                         const std::string& property_name,
-                         const mojo::Array<uint8_t>& revert_value);
+  InFlightPropertyChange(
+      Window* window,
+      const std::string& property_name,
+      const base::Optional<std::vector<uint8_t>>& revert_value);
   ~InFlightPropertyChange() override;
 
   // InFlightChange:
@@ -244,7 +244,7 @@ class InFlightPropertyChange : public InFlightChange {
 
  private:
   const std::string property_name_;
-  mojo::Array<uint8_t> revert_value_;
+  base::Optional<std::vector<uint8_t>> revert_value_;
 
   DISALLOW_COPY_AND_ASSIGN(InFlightPropertyChange);
 };