mus: Let clients set the cursor of their window.

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

Index: components/mus/public/cpp/lib/in_flight_change.h
diff --git a/components/mus/public/cpp/lib/in_flight_change.h b/components/mus/public/cpp/lib/in_flight_change.h
index 3dc42a74724165afbdbd76d65714df26ad8c59b9..4231251e18de3e326eb3c437aae223955c861799 100644
--- a/components/mus/public/cpp/lib/in_flight_change.h
+++ b/components/mus/public/cpp/lib/in_flight_change.h
@@ -15,6 +15,10 @@
 
 namespace mus {
 
+namespace mojom {
+enum Cursor : int32_t;
+}
+
 class Window;
 
 enum class ChangeType {
@@ -23,7 +27,8 @@ enum class ChangeType {
   DELETE_WINDOW,
   NEW_WINDOW,
   PROPERTY,
-  REMOVE_TRANSIENT_WINDOW_FROM_PARENT
+  REMOVE_TRANSIENT_WINDOW_FROM_PARENT,
+  PREDEFINED_CURSOR

[sky, 2015/12/02 21:42:35]

nit: keep sorted.

 };
 
 // InFlightChange is used to track function calls to the server and take the
@@ -130,6 +135,22 @@ class InFlightPropertyChange : public InFlightChange {
   DISALLOW_COPY_AND_ASSIGN(InFlightPropertyChange);
 };
 
+class InFlightPredefinedCursorChange : public InFlightChange {
+ public:
+  InFlightPredefinedCursorChange(Window* window, mojom::Cursor revert_value);
+  ~InFlightPredefinedCursorChange() override;
+
+  // InFlightChange:
+  bool Matches(const InFlightChange& change) const override;
+  void SetRevertValueFrom(const InFlightChange& change) override;
+  void Revert() override;
+
+ private:
+  mojom::Cursor revert_cursor_;
+
+  DISALLOW_COPY_AND_ASSIGN(InFlightPredefinedCursorChange);
+};
+
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_LIB_IN_FLIGHT_CHANGE_H_