refactor: check ELECTRON_ENABLE_LOGGING via native implementation (#25623)

shell/common/api/electron_api_environment.cc

@@ -0,0 +1,45 @@
+// Copyright (c) 2020 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "base/environment.h"
+#include "shell/common/gin_helper/dictionary.h"
+#include "shell/common/node_includes.h"
+
+namespace {
+
+v8::Local<v8::Value> GetVar(v8::Isolate* isolate, const std::string& name) {
+  std::string value;
+  if (base::Environment::Create()->GetVar(name, &value)) {
+    return gin::StringToV8(isolate, value);
+  } else {
+    return v8::Null(isolate);
+  }
+}
+
+bool HasVar(const std::string& name) {
+  return base::Environment::Create()->HasVar(name);
+}
+
+bool SetVar(const std::string& name, const std::string& value) {
+  return base::Environment::Create()->SetVar(name, value);
+}
+
+bool UnSetVar(const std::string& name) {
+  return base::Environment::Create()->UnSetVar(name);
+}
+
+void Initialize(v8::Local<v8::Object> exports,
+                v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context,
+                void* priv) {
+  gin_helper::Dictionary dict(context->GetIsolate(), exports);
+  dict.SetMethod("getVar", &GetVar);
+  dict.SetMethod("hasVar", &HasVar);
+  dict.SetMethod("setVar", &SetVar);
+  dict.SetMethod("unSetVar", &UnSetVar);
+}
+
+}  // namespace
+
+NODE_LINKED_MODULE_CONTEXT_AWARE(electron_common_environment, Initialize)