Add more index spaces to the WebAssembly JS debug proxy

This CL adds the globals index space to the JS debug proxy as well as the
stack object. It also adds few small helpers to simplify the proxy setup
a little, since all index spaces work exaclty the same.

Bug: chromium:1127914
Change-Id: I707292ab7f44aafb73751c17fdacfef976316f39
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2448468
Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70332}

test/cctest/wasm/test-wasm-debug-evaluate.cc

@@ -536,12 +536,12 @@ WASM_COMPILED_EXEC_TEST(WasmDebugEvaluate_JavaScript) {
   Handle<String> snippet =
       V8String(isolate,
                "JSON.stringify(["
-               //"$global0, "
+               "$global0, "
                //"$table0, "
                "$var0, "
                //"$main, "
                //"$memory0, "
-               //"globals[0], "
+               "globals[0], "
                //"tables[0], "
                "locals[0], "
                //"functions[0], "
@@ -551,7 +551,7 @@ WASM_COMPILED_EXEC_TEST(WasmDebugEvaluate_JavaScript) {
                //"stack, "
                //"imports, "
                //"exports, "
-               //"globals, "
+               "globals, "
                "locals, "
                //"functions, "
                "], (k, v) => k === 'at' || typeof v === 'undefined' || typeof "
@@ -563,7 +563,7 @@ WASM_COMPILED_EXEC_TEST(WasmDebugEvaluate_JavaScript) {
   WasmJSBreakHandler::EvaluationResult result =
       break_handler.result().ToChecked();
   CHECK_WITH_MSG(result.error.IsNothing(), result.error.ToChecked().c_str());
-  CHECK_EQ(result.result.ToChecked(), "[\"65\",\"65\",{}]");
+  CHECK_EQ(result.result.ToChecked(), "[\"66\",\"65\",\"66\",\"65\",{},{}]");
   //"[\"66\",{},\"65\",\"function 0() { [native code] }\",{},"
   //"\"66\",{},\"65\",\"function 0() { [native code] }\",{},"
   //"{},{},{\"0\":\"65\"},{},{},{},{},{}]");