Implement new Function.prototype.toString and fix CreateDynamicFunction parsing

test/cctest/wasm/test-wasm-breakpoints.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/debug/debug-interface.h"
 #include "src/frames-inl.h"
 #include "src/property-descriptor.h"
 #include "src/utils.h"
 #include "src/wasm/wasm-macro-gen.h"
 #include "src/wasm/wasm-objects.h"
@@ skipping 120 matching lines @@
 
 Handle<JSObject> MakeFakeBreakpoint(Isolate* isolate, int position) {
   Handle<JSObject> obj =
       isolate->factory()->NewJSObject(isolate->object_function());
   // Generate an "isTriggered" method that always returns true.
   // This can/must be refactored once we remove remaining JS parts from the
   // debugger (bug 5530).
   Handle<String> source = isolate->factory()->NewStringFromStaticChars("true");
   Handle<Context> context(isolate->context(), isolate);
   Handle<JSFunction> triggered_fun =
-      Compiler::GetFunctionFromString(context, source, NO_PARSE_RESTRICTION)
+      Compiler::GetFunctionFromString(context, source, NO_PARSE_RESTRICTION,
+                                      kNoSourcePosition)
           .ToHandleChecked();
   PropertyDescriptor desc;
   desc.set_value(triggered_fun);
   Handle<String> name =
       isolate->factory()->InternalizeUtf8String(CStrVector("isTriggered"));
   CHECK(
       JSObject::DefineOwnProperty(isolate, obj, name, &desc, Object::DONT_THROW)
           .FromMaybe(false));
   return obj;
 }
@@ skipping 126 matching lines @@
                                 {19, BreakHandler::StepIn},   // GetLocal
                                 {21, BreakHandler::StepIn},   // Call
                                 {1, BreakHandler::StepOut},   // in f2
                                 {23, BreakHandler::Continue}  // After Call
                             });
 
   Handle<Object> global(isolate->context()->global_object(), isolate);
   CHECK(!Execution::Call(isolate, main_fun_wrapper, global, 0, nullptr)
              .is_null());
 }