Expose the BudgetService interface to Workers.

third_party/WebKit/Source/modules/budget/BudgetService.idl

Index: third_party/WebKit/Source/modules/budget/BudgetService.idl
diff --git a/third_party/WebKit/Source/modules/budget/BudgetService.idl b/third_party/WebKit/Source/modules/budget/BudgetService.idl
index 2087b9c6f19f8d37caa9156a3c8eb78d981a22ca..aa1d58d84ce295dab750c4780a42ef8ef211f1ed 100644
--- a/third_party/WebKit/Source/modules/budget/BudgetService.idl
+++ b/third_party/WebKit/Source/modules/budget/BudgetService.idl
@@ -9,7 +9,8 @@ enum OperationType {
 };
 
 [
-    RuntimeEnabled=Budget
+    RuntimeEnabled=Budget,
+    Exposed=(Window,Worker)
 ] interface BudgetService {
     [CallWith=ScriptState] Promise<double> getCost(OperationType operation);
     [CallWith=ScriptState] Promise<FrozenArray<BudgetState>> getBudget();