Add {Lock,Unlock,Show,Hide}Cursor() to the window manager mojom.

services/ui/public/interfaces/window_manager.mojom

Index: services/ui/public/interfaces/window_manager.mojom
diff --git a/services/ui/public/interfaces/window_manager.mojom b/services/ui/public/interfaces/window_manager.mojom
index 91f87baeb33b7db1b2c885573ee7029e1560da33..f3e9c993e342992bdbdb12742a787a2f3ecedfc7 100644
--- a/services/ui/public/interfaces/window_manager.mojom
+++ b/services/ui/public/interfaces/window_manager.mojom
@@ -299,6 +299,19 @@ interface WindowManagerClient {
   // Sets the cursor that the non-client areas of the window should use.
   WmSetNonClientCursor(uint32 window_id, CursorData cursor);
 
+  // Locks and unlocks the cursor globally. Used during window management tasks
+  // where the cursor shouldn't change.
+  WmLockCursor();
+  WmUnlockCursor();
+
+  // Hides and unhides the cursor globally. Used during window management tasks.
+  WmShowCursor();
+  WmHideCursor();
+
+  // Sets a global cursor which overrides per-window cursors. Pass null to
+  // clear.
+  WmSetGlobalOverrideCursor(CursorData? cursor);
+
   // Response from WmCreateTopLevelWindow() informing the client of the id for
   // the new window.
   OnWmCreatedTopLevelWindow(uint32 change_id, uint32 window_id);