[wasm_builder] Update names of instructions extern.internalize/externalize

These instructions were renamed to any.convert_extern and extern.convert_any in
Wasm GC spec commit:
WebAssembly/gc@5bca3f7

Change-Id: Ie696541f75974c69828fb317754e3b613691eb4d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/420141
Reviewed-by: Martin Kustermann <[email protected]>
Commit-Queue: Ömer Ağacan <[email protected]>

Author: osa1

pkg/dart2wasm/lib/constants.dart

@@ -373,7 +373,7 @@ class ConstantInstantiator extends ConstantVisitor<w.ValueType>
     if (translator.needsConversion(resultType, expectedType)) {
       if (expectedType == const w.RefType.extern(nullable: true)) {
         assert(resultType.isSubtypeOf(w.RefType.any(nullable: true)));
-        b.extern_externalize();
+        b.extern_convert_any();
       } else {
         // This only happens in invalid but unreachable code produced by the
         // TFA dead-code elimination.

pkg/dart2wasm/lib/intrinsics.dart

@@ -1464,22 +1464,22 @@ class Intrinsifier {
       case StaticIntrinsic.externalizeNonNullable:
         final value = node.arguments.positional.single;
         codeGen.translateExpression(value, w.RefType.any(nullable: false));
-        b.extern_externalize();
+        b.extern_convert_any();
         return w.RefType.extern(nullable: false);
       case StaticIntrinsic.externalizeNullable:
         final value = node.arguments.positional.single;
         codeGen.translateExpression(value, w.RefType.any(nullable: true));
-        b.extern_externalize();
+        b.extern_convert_any();
         return w.RefType.extern(nullable: true);
       case StaticIntrinsic.internalizeNonNullable:
         final value = node.arguments.positional.single;
         codeGen.translateExpression(value, w.RefType.extern(nullable: false));
-        b.extern_internalize();
+        b.any_convert_extern();
         return w.RefType.any(nullable: false);
       case StaticIntrinsic.internalizeNullable:
         final value = node.arguments.positional.single;
         codeGen.translateExpression(value, w.RefType.extern(nullable: true));
-        b.extern_internalize();
+        b.any_convert_extern();
         return w.RefType.any(nullable: true);
       case StaticIntrinsic.wasmExternRefIsNull:
         final value = node.arguments.positional.single;

pkg/wasm_builder/lib/src/builder/instructions.dart

@@ -1408,16 +1408,16 @@ class InstructionsBuilder with Builder<ir.Instructions> {
     _add(ir.BrOnCastFail(_labelIndex(label), inputType, targetType));
   }
 
-  /// Emit an `extern.internalize` instruction.
-  void extern_internalize() {
+  /// Emit an `any.convert_extern` instruction.
+  void any_convert_extern() {
     assert(_verifyTypesFun(const [ir.RefType.extern(nullable: true)],
         (inputs) => [ir.RefType.any(nullable: inputs.single.nullable)],
         trace: ['extern.internalize']));
     _add(const ir.ExternInternalize());
   }
 
-  /// Emit an `extern.externalize` instruction.
-  void extern_externalize() {
+  /// Emit an `extern.convert_any` instruction.
+  void extern_convert_any() {
     assert(_verifyTypesFun(const [ir.RefType.any(nullable: true)],
         (inputs) => [ir.RefType.extern(nullable: inputs.single.nullable)],
         trace: ['extern.externalize']));