[turbofan] Add TruncateFloat32ToUint32 operator to Turbofan.

src/compiler/machine-operator.h

Index: src/compiler/machine-operator.h
diff --git a/src/compiler/machine-operator.h b/src/compiler/machine-operator.h
index 196760cb9ef6c2ecc08dcf92dabb123c0fb76821..1dccca5e476b3120d342abddfef9657ea00fbd3e 100644
--- a/src/compiler/machine-operator.h
+++ b/src/compiler/machine-operator.h
@@ -214,6 +214,7 @@ class MachineOperatorBuilder final : public ZoneObject {
   const Operator* ChangeFloat64ToInt32();   // narrowing
   const Operator* ChangeFloat64ToUint32();  // narrowing
   const Operator* TruncateFloat32ToInt32();
+  const Operator* TruncateFloat32ToUint32();
   const Operator* TryTruncateFloat32ToInt64();
   const Operator* TryTruncateFloat64ToInt64();
   const Operator* TryTruncateFloat32ToUint64();